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F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 59, 7 March 2002 www.nre.vic.gov.au ISSN 1443-0606

Australian Bass Released into Lake Glenmaggie

On 5th March, the Minister for Energy and Resources, Candy Broad, liberated 12,450 Australian bass fingerlings into Lake Glenmaggie, near Heyfield. This is the first time that Lake Glenmaggie has been stocked with Australian bass. These fish are the result of a co-operative effort between the Heyfield Angling Club, the Marine and Freshwater Resources Institute (MAFRI) and Shearwater Aquaculture, a private aquaculture firm based at Phillip Island. Parent fish were sourced from the Mitchell and Tambo Rivers to ensure that the offspring did not compromise the genetic integrity of existing bass populations in the Gippsland catchment.

Funds from the Recreational Fishing Licence contributed to the purchase of these bass fingerlings. It is anticipated that other bass stocking trials will commence in selected Gippsland waters, such as Blue Rock Reservoir, in future years when higher numbers of bass fingerlings become available.

Trial Trout Stocking of the Goulburn River

At the recent NRE Fish Management Consultation meeting in the North East agreement was reached that NRE would not stock the Goulburn River with trout on the basis that all the available scientific evidence suggested that natural recruitment was sufficient to maintain the fishery.

MAFRI research indicates that there are as many small brown trout in the Goulburn River now as there have been for any of the last 5 years. Furthermore, their studies indicate that the river’s brown trout population is indeed ‘self-sustaining’ with regular natural recruitment from mature fish. Based on this advice, Fisheries Victoria has not supported the stocking of brown trout on top of this ‘wild’ population. In part, this position has been in response to anglers who have indicated that they want the upper Goulburn to be a tailrace fishery for ‘wild’ trout.

Not withstanding this, the meeting also determined that Futurefish should be allowed to undertake a trial stocking of brown trout fingerlings in the Goulburn River between Alexandra and Seymour during 2002. This was in response to continued suggestions by Futurefish that some anglers have not been observing small brown trout as they have done in previous years.

No permit has been issued for this stocking at this stage. Fisheries Victoria is continuing to liaise with Futurefish on the detail of this project, but the intent is for Futurefish to pay for the release of 50,000 marked fingerlings in 2002. Fisheries Victoria and Futurefish will then jointly fund MAFRI to undertake a monitoring program to assess the contribution these fish have made to existing trout stocks in this premier angling water. Futurefish and Fisheries Victoria have agreed to meet the costs of this monitoring program on a 50:50 split for a period of between 2 and 4 years.

Fish-Fax Issue 59, 7 March 2002

Fisheries Management in Victoria – Who does what?

NRE’s Secretary, Chloe Munro, is actively promoting the need for the Department to engage the community as a key step in achieving improved management of our natural resources. For recreational anglers to participate effectively in these community engagement initiatives it is important they understand the roles and responsibilities of two key parts of NRE that deliver fisheries services.

Regional Services

Four Fisheries Managers manage teams of fisheries officers and planning staff to deliver a range of compliance, education and aquatic habitat management programs across the state. These managers are accountable to the Executive Director Regional Services via Regional Managers, who are responsible for the delivery of all of the Department’s services on the ground. Fisheries Managers are responsible for the work of regionally-based staff who: • Deliver all recreational, commercial and aquaculture fisheries compliance programs; • Provide aquatic habitat advice and advocacy services aimed at improving environmental outcomes via local and regional planning processes; • Resolve local fisheries management issues; • Consult with local and regional recreational and commercial fishing interests; • Provide access to a full range of services available from NRE.

Matters to do with the provision of these services should be directed to the following Fisheries Managers: Northern Neville Fowler, Benalla 5761 1512 South West Graeme Hanel, Warrnambool 5561 9958 Port Phillip Rob Jolly, Geelong 5226 4694 Gippsland Tom Speedie, Traralgon 5172 2195

For more information contact the Customer Service Centre – ph 136 186.

This publication may be of assistance to you but the State of Victoria and its employees do not guarantee that the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaims all liability for any error, loss or other consequence which may arise from you relying on any information in this publication.

Fish-Fax Issue 59, 7 March 2002

Fisheries Management in Victoria – Who does what? (cont.)

Fisheries Victoria

Fisheries Victoria is a division within NRE that provides policy direction and administrative services for fisheries management.

It does not manage the on ground activities of Fisheries Officers, but is responsible for providing advice to government on the development and review of fisheries management policies, legislation and regulations.

It’s role includes the statewide coordination of commercial, recreational and aquaculture fisheries management, licensing and fisheries, aquatic habitat research and development programs. Included in this is the work delivered by the Marine and Freshwater Resources Institute (MAFRI) at Queenscliff and Snob’s Creek.

Richard McLoughlin heads this division as the Executive Director, Fisheries Victoria.

Within Fisheries Victoria the Recreational Fishing unit is the key focus for policy and program coordination for recreational and inland fisheries management.

Matters to do with recreational and inland fisheries policy should be directed to Mr Greg Hayes, Manager Recreational Fisheries (03) 9412 5736.

Murray Cod Tag Recapture

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 59, 7 March 2002

In late January 2002, a tagged Murray cod was recaptured after 9 years at liberty. The female fish was originally caught, tagged and released in October 1992 in Budgee Creek, Barmah Forest, measuring 59cm and weighing 3.25kg. It was recaptured in the Murray River during the Tocumwal Fishing Competition about 10km downstream of Tocumwal measuring 100cm and weighing 14.5kg. This is some 85km upstream from where it was originally caught, tagged and released as part of a Murray Darling Basin Commission funded MAFRI project looking at the effects of flooding on fish movement and spawning behaviour. This is believed to be the longest period that a tagged Murray cod has been at liberty.

Enforcement Outcomes

A person from Springvale South was fined and aggregate of $500 for using/possessing commercial fishing equipment without authority and using commercial fishing equipment to take excess bream. The offences were committed near Carrum in March 2001.

Two people of Boorhaman were fined $850 each for using commercial fishing equipment without authority and possessing commercial fishing equipment without authority. The offences were committed in the Ovens River in August and September 2001.

Recreational Fisheries Management Section Fisheries Victoria

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 60, 21 March 2002 www.nre.vic.gov.au ISSN 1443-0606 Bag/Possession Limit & Bait Species

Why do bait species such as garfish and mullet have a bag/possession limit of 40 but are also shown on page 21 of the 2001-2002 Victorian Recreational Fishing Guide as a bait species which is exempted from the combined scale fish bag/possession limit?

Certain defined 'bait' species (eg. mullet and garfish) have been excluded from the combined scale fish bag/possession limit because these species are often caught for use as fishing bait rather than for human consumption. This means that a person can go out and take up to 40 garfish for bait plus up to 40 mullet for bait plus up to 40 other scale fish in a days fishing (including garfish and mullet for purposes other than bait).

Recreational Fishing Licences from Shell Service Stations

Recreational Fishing Licences can now be purchased on-line 24 hours a day/7 days a week through Shell Touch machines located in Shell service stations in metropolitan and rural Victoria, New South Wales, Queensland and ACT. Free copies of the Recreational Fishing Guide are also available at these outlets with the licences. Licences can also be purchased over-the-counter at over 950 existing outlets, and on-line through the Internet by visiting www.nre.vic.gov.au/fishing

Opportunity For Anglers To Assist Carp Management

South West Region Fisheries Officers are seeking any information from anglers regarding catches or sightings of carp in the Glenelg river below Rocklands Reservoir. Fisheries Officers have been conducting surveys in the river and have only captured a single carp to date.

Horsham based Fisheries Officer Paul Shea says “We have also had one report of a carp being caught around Harrow and are very interested to know if there have been any other catches. We need to know their current distribution within the Glenelg system in order to target our management response.”

The Glenelg Hopkins CMA intends to employ consultants to identify carp control options for both Rocklands Reservoir and the lower Glenelg River.

Any information regarding carp catches in the Glenelg river can be forwarded to Paul Shea, Fisheries Officer, at the Horsham NRE office on 5362 2111.

Fish-Fax Issue 60, 21 March 2002

Freshwater Fish Habitat Rehabilitation

During 2001, Paul Brown, fisheries scientist at MAFRI Snobs Creek, undertook a two-week visit to Minnesota and Wisconsin to review fish habitat rehabilitation projects. During his trip, Paul visited and reviewed a range of different habitat rehabilitation projects many which he believes, could be directly applicable to Victorian stream situations to rehabilitate habitat and enhance recreational fisheries.

The use of artificial overhanging bank structures in the USA was common. Known as LUNKER structures (Little Underwater Neighbourhood Keeper Encompassing Rheotactic salmonids) and constructed from rock, logs or slabs of timber. It is designed to provide permanent habitat for fish such as adult brown trout that require complex cover and are naturally found sheltering under large woody debris or overhanging banks.

LUNKER structures have increased the abundance of brown trout by several hundred percent in some midwest USA streams. Paul feels that this method could work well for both brown trout and native fish species such as blackfish, Murray cod and trout cod in Victoria depending on where, and how they are deployed.

The removal of small dams and weirs to allow for fish passage is more prevalent in the USA than in Victoria. At some sites, large weirs had been converted to rock-ramps to create a complex pattern of water flows that allow fish passage for a range of fish species and sizes. These boulder-rapids may be more aesthetically acceptable and equally as functional for fish-passage than the, now standard, concrete vertical-slot fishway that has been used in many Australian streams.

Many of the US projects observed have already solved some of the problems in fisheries management that we are only now starting to deal with here in Victoria. MAFRI (Snobs Creek) hosted a workshop in February to raise awareness of the potential to manage river fisheries through habitat rehabilitation. The workshop highlighted the potential for the application of these US methods to Victorian situations as well as showcasing a number of habitat projects being undertaken in Victoria, Canberra and New South Wales. Over 50 representatives from the catchment management, fisheries management and recreational fishing sectors, including VRFish, attended.

The workshop included visits to:

¾ The Goulburn River where the Goulburn Broken Catchment Management Authority has undertaken fish habitat and access improvement works, partly funded by the RFL.

¾ The Acheron River where the Goulburn Broken CMA has installed LUNKER structures as part of a bank stabilisation incorporating fish habitat demonstration site.

The proceedings of the workshop will be available shortly as an NRE publication.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 60, 21 March 2002

Recreational Fisheries Management Section Fisheries Victoria

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 61, 28 March 2002 www.nre.vic.gov.au ISSN 1443-0606 Government Announces Revised Marine Parks Package

On March 26th, Premier Steve Bracks announced the Government’s revised marine parks package.

The package identifies 13 marine national parks and 11 marine sanctuaries including Cape Howe Marine National Park and a marine sanctuary at Ricketts Point.

For an information package that contains more details about the revised marine parks package please visit the ‘Current Issues’ section of the NRE website at www.nre.vic.gov.au or contact the Customer Service Centre on 136 186.

Combined Scalefish Bag & Possession Limit – Correction to Previous FishFax Article

Fish Fax Issue No. 60, released on 21 March 2002, contains an article entitled "Bag/Possession Limit & Bait Species" which attempted to explain current recreational catch restrictions for species such as garfish and mullet that are caught for bait as well as for other purposes.

The last sentence of the article in Fish Fax No. 60 incorrectly states:- "This means that a person can go out and take up to 40 garfish for bait plus up to 40 mullet for bait plus up to 40 other scale fish in a day's fishing (including garfish and mullet for purposes other than bait).".

The fisheries regulations and pages 22 and 23 of the Recreational Fishing Guide clearly state that the daily bag limit and possession limit for garfish is 40 per person, and that the daily bag limit and possession limit for mullet is 40 per person. These limits apply regardless of whether the garfish or mullet are to be used for bait or other purposes (or both).

The designation of garfish, mullet and several other species as 'bait' species for the purposes of the combined scale fish bag and possession limits (see page 21 of the Recreational Fishing Guide) is intended to allow anglers to catch and keep these species for use as fishing bait (if that is what they choose to do), without affecting their ability to catch and keep up to 40 scale fish of other more highly valued species.

We apologise for any confusion that the incorrect statement in Fish Fax No. 60 may have caused.

Recreational Fisheries Management Section Fisheries Victoria

F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 62, 4 April 2002 www.nre.vic.gov.au ISSN 1443-0606 Draft Victorian River Health Strategy

In early March, the Minister for Environment and Conservation, Ms Sherryl Garbutt released a draft Victorian River Health Strategy (VRHS) for public comment which:

¾ Sets out a clear vision to guide the long term management and restoration of rivers across Victoria, ¾ Establishes targets for river restoration which will direct all activities and enable measurement of progress, ¾ Establishes a regional planning framework which draws together all river health issues including environmental flows, water quality, management of the river channel and catchment and streamside land, ¾ Empowers communities to make decisions on rivers that balance their environmental, economic and social needs.

The VRHS aims to address evidence that only 22% of Victoria's rivers are in good or excellent condition. This is due to a combination of factors including changes to flow regimes, degraded water quality and poor management of the catchment and streamside land. The overall philosophy of the draft VRHS is to:

¾ Protect the rivers of highest community value from any decline in condition; ¾ Maintain the condition of rivers that are currently ecologically healthy; ¾ Achieve an 'overall improvement' in the environmental condition of the remainder of rivers, ¾ Prevent damage from future management activities.

The draft Strategy is now available at www.nre.vic.gov.au/vrhs or via the Customer Service Centre, for public comment. Written submissions will be accepted until 30th April 2002.

Tooliorook Anglers Get Involved

Over the last 3 years over 40,000 native trees have been planted around Lake Tooliorook, near Lismore, as part of a NHT funded restoration project. The project aims to increase habitat for terrestrial species with fringe benefits for aquatic ecosystem health, water quality and fish habitat. Many people contributed to the enormous effort but the organisation responsible for applying for the grant was the Lismore Angling Club whose President, Mr Tom Pemberton should be congratulated for his leadership. The Geelong Gun and Rod Association have also contributed significantly with dozens of their members planting trees on several working bees. To commemorate the project, South West Fisheries, NRE, have sponsored the “Tom Pemberton Shield” perpetual shield – the first of which was organised at Lake Tooliorook in early February 2002

Fish-Fax Issue 62, 4 April 2002

Western Port Bay – Marine Pests Research

MAFRI (Queenscliff) has recently completed a scientific study to determine the status of marine pest species in Western Port. The study considered a number of pest species that are listed on the Australian Ballast Water Management Advisory Council’s (ABWMAC) Marine Target Species List. This list of pest species includes those that are likely to provide the greatest threat to our native marine ecosystems and that require action to prevent introduction to new areas.

This study aimed to determine whether selected species had, or had not, established populations in Westernport. This information was needed to establish whether shipping and maritime activities pose a risk of introducing these pests to Western Port.

The species targeted by the MAFRI study were the: ¾ Japanese ‘wakame’ seaweed Undaria pinnatifida, ¾ European fanworm, Sabella spallanzanii, ¾ the small bivalve mollusc, Corbula gibba, ¾ the microscopic dinoflagellates, Alexandrium spp. and Gymnodinium catenatum.

Sabella and Corbula are pests because they can occur in such high densities on the seabed that they outcompete native species for food and may also compete for space. The 2 metre high kelp, Undaria, can completely dominate the seafloor during winter and spring, so that it alters the natural community of plants and animals. The microscopic dinoflagellates targeted by the study have been responsible for toxic algal blooms.

Marine scientists carried out extensive surveys at different sites throughout Western Port. Whilst all these species (except for the dinoflagellate G. catenatum) had been recorded in Western Port in the past, the only species which appeared to have established self-sustaining populations were the dinoflagellates Alexandrium spp. For the remaining species, Western Port was given a clean bill of health.

Enforcement Outcomes

A person from St.Albans was convicted and fined an aggregate of $1,000 for possessing undersize fish, possessing excess of the catch limit and not possessing a Recreational Fishing Licence. The offences were committed at Newport in May 2001.

A person from Richmond was convicted and fined an aggregate of $1,250 for taking marine invertebrates, giving false place of residence, abusing or insulting an authorised officer and littering. The offences were committed at Altona in March 2001.

A person from Port Macdonnell, South Australia, was fined $800 for using commercial fishing equipment and possessing undersize male/female rock lobster. The offences were committed in Discovery Bay, Portland, in May 2001.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 62, 4 April 2002

Recreational Fisheries Management Section Fisheries Victoria

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 63, 18 April 2002 www.nre.vic.gov.au ISSN 1443-0606 MAFRI Research - Murray Cod Stocking Trial

In March and April 2002, Fisheries staff released 3,500 on-grown Murray cod into sections of the Loddon and Goulburn Rivers as part of a research project investigating stocking strategies.

The growth and survival of these larger fish will be compared with the growth and survival of cod fingerlings that were released recently.

Water Location Fingerling Murray Cod On-grown Murray Cod Goulburn River Toolamba to Loch Garry 25,000 2,500 Loddon River Above Bridgewater 10,000 1,000

The on-grown Murray cod weighed between 200 and 250 grams each and have been dart tagged. Fingerling Murray cod (stocked at about 1 gram each) have been treated with Alizarin, a chemical that leaves a permanent mark on the otolith (earbone). These two different marking methods will help distinguish these fish from Murray cod that are naturally recruited.

Each tag has an identifying number and a telephone number. Fisheries Victoria hopes that anglers catching tagged Murray cod will report their capture(s) by ringing the telephone number on the tag. If the cod are under the minimum legal size limit of 50 cm they should be returned to the water.

An assessment of this stocking trial will be based on angler catch reports and additional monitoring by MAFRI research staff.

Abalone and Rock Lobster Plastic Measures

Fisheries Victoria has new supplies of abalone and rock lobster plastic measures.

The design of the measures has changed but the regulations pertaining to the recreational harvest of abalone and rock lobster remains unchanged.

It is therefore not necessary for recreational fishers to obtain one of the new measures if they are already in possession of the older version.

The measures are available from Fiona Withnall, Recreational Fisheries Communications Officer, ph. (03) 9412 5707 or [email protected]

Fish-Fax Issue 63, 18 April 2002

Enforcement Outcomes

A person from Richmond was fined $350 and had their equipment forfeited and destroyed for possessing commercial fishing equipment without authority. The offence was committed near Patterson Lakes in July 2001.

A person from Port MacDonnell, South Australia, was fined an aggregate of $800 for taking/possessing undersize fish. The offence was committed near Portland in May 2001.

A person from Meadow Heights was convicted and fined an aggregate of $600 for taking/possessing in excess of the catch limit and taking/possessing undersize fish. The offences were committed near Newport in July 2001.

Two people, one from Nunawading and the second from Footscray, were fined an aggregate of $300 each for possessing more than twice the abalone catch limit, possessing undersize fish and failing to cut abalone meat upon landing. The offences were committed near Rye Back Beach in March 2001.

A person from Bairnsdale was convicted and fined an aggregate of $750 for not possessing a recreational fishing licence and taking/possessing more than the catch limit. The offences were committed on Morass Creek, near Benambra, in September 2000.

A person from Springvale was fined an aggregate of $500 for possessing commercial fishing equipment without authority, using commercial fishing equipment without authority, possessing undersize fish and using commercial fishing equipment to take undersize fish. The offences were committed near Carrum in March 2001.

A person from Footscray was convicted and fined $650, had all equipment forfeited and destroyed for taking/possessing in excess of the catch limit. The offence was committed on Port Phillip Bay in November 2000.

Two people from Footscray West were convicted and fined $250 each for taking/possessing undersize fish, taking/possesing in excess of the catch limit and not possessing a recreational fishing licence. The offences were commited near Williamstown in April 2001.

Victorian Water Levels Update

For the week ending April 15, 2002:

Blue Rock 96% Fyans Lake 36% Nillahcootie 53% Buffalo Lake 48% Glenmaggie 28% Rocklands 15% Cairn Curran 25% Hume 13% Taylors 74% Dartmouth 85% Laanecoorie 61% Toolondo 4% Eildon Lake 31% Mulwala 100% Wartook 75% Eppalock 31% Mokoan 43% Waranga 33%

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 63, 18 April 2002

Recreational Fisheries Management Section Fisheries Victoria

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s V i c t o r i a FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 64, 2 May 2002 www.nre.vic.gov.au ISSN 1443-0606 Lake Mulwala/Lower Ovens River - Fishing Closure

The Minister for Energy and Resources, Candy Broad, has announced a temporary ban on fishing in Lake Mulwala and the lower reaches of the Ovens River. Goulburn-Murray Rural Water Authority will be lowering the lake level to carry out maintenance on the weir wall and gate structure. As a result, fish stocks will become concentrated in the old ‘river bed’ and be particularly vulnerable to excessive harvesting. Lake Mulwala is considered to be a Murray cod fishery of national significance as well as a very important fishery for golden perch and Murray spiny crayfish.

Research has shown that large woody debris (eg standing timber and snags) is critical habitat for both Murray cod and golden perch. Therefore a ban has also been implemented on the removal, destruction or damage of this critical fish habitat while the lake is drawn down.

The fishing closure will extend from Monday 6th May until midnight on Wednesday 14th August 2002 for all waters impounded by the Yarrawonga Weir which lie in Victoria below or downstream from the Murray Valley Highway Bridge over the Ovens River Arm of Lake Mulwala. During the closure it will be an offence to: • possess fishing equipment in, on, or adjacent to the closed area, • take or attempt to take any species of fish from the closed area, or • interfere with, or damage fish habitat, including standing timber and snags, on the bed and banks of the lake and river in the closed area.

NSW Fisheries will introduce similar measures for all NSW waters within Lake Mulwala , the bed and banks of Lake Mulwala and the Murray River upstream to its junction with the Ovens River. A boating closure will be introduced by Waterways NSW from 6th May and the closure will extend until the 15th August 2002 by which time it is anticipated the lake will be refilled. If this is not the case an extension of the closure until the end of August may be considered.

Ovens River to Benefit from Riverbank Improvement Works

On the 17th April, the Minister for Environment and Conservation, Sherryl Garbutt, announced $100,000 funding to improve the health of the Ovens River. The improvement works will involve willow removal and improving riparian land management along Happy Valley Creek, a tributary of the Ovens River. The works are also expected to reduce the risk and impacts of flooding on the downstream centre of Myrtleford.

Fish-Fax Issue 64, 2 May 2002

Abalone Management Plan Released

On the 24th April, the Minister for Energy and Resources, Candy Broad released a plan to ensure sustainable development of Victoria's $70 million abalone fishery. Victoria is the second largest abalone producing state in Australia after Tasmania, contributing 10% of the annual world harvest.

The plan for the next five years covers the commercial fishery as well as the recreational fishery and the aquaculture industry. Copies of the plan are available from the NRE Customer Service Centre on 136 186.

Reducing Rubbish Entering the Marine Environment

It is estimated that every year, 6.5 million tonnes of litter enters the sea around the world. That is equivalent to 75% of all vehicles on Australian roads being dumped into the ocean.

South West Regional Fisheries (NRE) has obtained National Heritage Trust funding for a Coasts and Clean Seas project that aims to reduce marine animal deaths that result from rubbish in the marine environment. Coasts and Clean Seas projects aim to accelerate activities in the national interest to achieve the conservation, sustainable use and repair of Australian’s coastal and marine environments.

The aim of this project, based at Warrnambool and Port Fairy, is to work with the local professional fishing community to reduce the amount of accidental rubbish entering the seas by providing the professional fishermen with secure rubbish bins on their boats.

Fisheries Officers, with the help of local volunteers, will be monitoring bins on the Port Fairy and Warrnambool wharves as well as sites along the coast between the two towns.

National Strategy for Released Line Caught Fish Survival

A steering committee comprising representatives of state and commonwealth fisheries management and research agencies, national and state recreational fishing peak bodies and the tackle industry is working with the Fisheries Research and Development Corporation to develop a 'National Strategy for the Survival of Released Line Caught Fish.'

While the strategy proposes to focus on improving the survival of hook-caught fish released by anglers it will also have application to commercial hook fisheries.

A funding proposal is being developed by the Australian National Sportfishing Association for an initial project involving a national TV campaign promoting best practice in fish release.

On behalf of the Steering Committee, Infofish Service is publishing a one page electronic News Bulletin to communicate progress on the national strategy to anglers and other stakeholders throughout Australia. To be added to the 'e-mailing list' contact [email protected] with 'subscribe to Released Fish Survival News' listed as the subject.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 64, 2 May 2002

Recreational Fisheries Management Section Fisheries Victoria

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 65, 16 May 2002 www.nre.vic.gov.au ISSN 1443-0606

Marine National Parks

As previously advised in Fish Fax 61 the NRE website, www.nre.vic.gov.au (click on 'Marine National Parks' and then 'Recreational Fishing Spots and Marine National Parks') contains information about the Government's proposals for establishing Marine National Parks and sanctuaries. Marine National Parks are proposed at 13 locations along Victoria's coast that represents about 5% of Victoria’s coastal waters. Of over 300 fishing spots listed in "The Victorian Fishing Atlas 2001", 15 are within the proposed boundaries of Marine National Parks and sanctuaries. No piers, jetties or breakwaters are included in any Marine National Parks.

Angler Survey Results - Proposal To Extend The Salmonid Closed Season

A proposal to extend the salmonid closed season in Victoria was one of many suggested regulatory amendments that arose during the Review of Salmonid Regulations that commenced in late 2000. Based on the mixed response from the angling community, the Minister for Energy and Resources, Candy Broad, withdrew the proposal from the suite of proposed amendments. At the time, the Minister stated that the proposal would only be included in a future Regulatory Impact Statement (RIS) if there was ‘overwhelming support’ in subsequent consultation.

In November 2001, the Fisheries Division developed and distributed a survey to canvass opinion on the proposed extension to the salmonid closed season. Surveys were sent to all those individuals and organisations that had made a submission to the 2001 Salmonid RIS, over 400 Victorian angling clubs and associations and a random selection of 500 annual Recreational Fishing Licence (RFL) holders. They were asked if they supported (a) the extension of the closed season by between 2 and 3 weeks, or (b) the retention of the existing closed season dates, or (c) some other option.

Response Group No. of Responses % Support % Support % Support season extension existing dates another option Individual 252 56 37 7 Angling Club 123 49.5 37.5 13 Angling Association 11 36.5 45.5 18 Business 17 94 6 0

Based on these survey results, the Minister has decided not to include a proposal to extend the salmonid closed season in the next RIS because there is not ‘overwhelming support’ from the angling community. Clearly, the Victorian angling community continues to have mixed views on this issue.

Fish-Fax Issue 65, 16 May 2002

Spiny Freshwater Crayfish Management In Victoria

In late March 2002, the Murray Spiny Cray (Euastacus armatus) and the Glenelg Spiny Cray (Euastacus bispinosus) were both listed as ‘threatened species’ under the Flora and Fauna Guarantee Act (FFG) 1988. When listed in this manner, the power to regulate taking, trading or keeping transfers from the Fisheries Act 1995 to the FFG Act.

In order to allow angling to continue without requiring anglers to obtain a separate licence under the FFG Act, a Governor in Council (GIC) Order was prepared by Parks, Flora and Fauna (PFF), a Division of the Department of Natural Resources and Environment.

This particular GIC Order is titled Flora and Fauna Guarantee Act (Taking or Keeping of Spiny Freshwater Crayfish) Order No. 1/2002.

The harvest regulations in the GIC Order mirror current fisheries regulations for the two listed species of Spiny Freshwater Crays targeted by anglers: • Murray Spiny Cray (Euastacus armatus) • Glenelg Cray (Euastacus bispinosus)

There has been no change to the management responsibility for Gippsland Spiny Cray (Euastacus kershawi) as it has not been listed.

PFF are currently preparing a draft Action Statement for Murray Spiny Cray and the Glenelg Cray as required under the FFG Act.

The development of the final Action Statement will occur in consultation with the Fisheries Division. The Action Statement will identify conservation objectives, previous management actions, intended management actions, licence and permit conditions, research and monitoring needs and performance measures.

At this time, the Fisheries Division does not anticipate making any changes to spiny crayfish regulations in the upcoming 2002/2003 Victorian Recreational Fishing Guide.

Bendigo Fisheries Management Plan Released

On Friday 19th April, the Member of Bendigo East, Ms Jacinta Allan, launched the Bendigo Region Fisheries Management Plan at Crusoe Reservoir. The launch coincided with the release of 5,000 golden perch fingerlings into the reservoir.

The 5-year plan covers all of the Campaspe River catchment and upper reaches of the Loddon River catchment above Fernihurst Weir. A steering committee composed of representatives from regional water authorities, local government, peak fishing bodies as well as local anglers, Fisheries Division and regional fisheries staff, oversaw the development of the plan. Copies of the plan are available from the Customer Service Centre on 136 186.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 65, 16 May 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 66, 30 May 2002 www.nre.vic.gov.au ISSN 1443-0606 MAFRI Research - Whiting and Snapper

Scientists at MAFRI have been closely monitoring the young of many popular fish species in Port Phillip Bay and are predicting good catches of King George whiting and snapper over the next few years.

Larval and young fish are collected, sorted and counted each year to provide fisheries managers with an indication of the potential future catches of selected species.

This allows the review and development of harvest regulations to ensure the sustainable management of these species.

Dr. Greg Jenkins, Program Leader at MAFRI says that the information collected from the fish surveys has been crucial to gaining a better understanding of the status of King George whiting and snapper stocks in the bay.

“This year, a lot of undersized King George whiting have been caught in the bay”, explained Greg. “This is what we predicted back in 2000 when we caught large numbers of larval whiting coming into the bay”.

These large numbers of undersized whiting will reach the legal minimum size of 27cm by next year, and that’s good news for whiting fishers. MAFRI scientists are predicting a period of good catches for King George whiting next year and for about the next three years.

This year’s fish surveys have also found a much greater than normal number of baby snapper in Port Phillip Bay. “The small snapper we are catching in our trawl surveys are about 120mm long”, explained Greg. “These snapper are about one year old and were spawned during the summer of 2001”.

Even though it will take a few years for these snapper to reach catchable size, scientists are predicting that there will be some good snapper fishing in the bay in years to come.

“We can make good predictions about future fish catches based on the numbers of baby fish that we catch from year to year”, explained Greg.

“Ultimately, the protection of the habitats on which these baby fish depend is critical to their future”.

Fish-Fax Issue 66, 30 May 2002

Port Phillip Snapper Enforcement

Two men will be charged with several fisheries offences after being caught with more than ten times the legal limit of snapper near Altona on the evening of 28th May 2002. Senior fisheries officer, Dane Robinson, comments “We intercepted two men fishing from a boat south of the Altona boat ramp who were found in possession of 122 snapper, of which 112 were under size.”

The men, one from Glenroy and the other from Broadmeadows, will be charged with exceeding the snapper bag limit, possessing under sized fish, failing to return under sized fish to the water and obstructing a fisheries officer. Fisheries offices seized the boat and a van from the men.

In addition, fisheries officers also issued 12 on the spot fines ($100) for under size snapper and tailor as part of the same enforcement operation.

Victorian Angling Clubs and Associations Directory Now On-line

A directory of Victorian angling clubs and associations is now available on-line from www.nre.vic.gov.au/fishing/anglingclubs. Listed clubs and associations have approved the release of their contact details by Fisheries Victoria following the introduction of privacy legislation last year. Unlisted clubs and associations that would like to be added to the directory should contact [email protected] or (03) 9412 5706.

MAFRI Research – Tracking Golden Perch in Lake Eildon

To help anglers target golden perch in Lake Eildon more successfully MAFRI is undertaking research to find out what type of habitat golden perch prefer.

Since the mid 1990’s, hundreds of thousands of golden perch have been stocked into Lake Eildon. Recent MAFRI surveys have shown the some of these fish have survived and grown large, however, many anglers have been slow to take advantage of these fish with relatively inconsistent catches.

Several Lake Eildon golden perch have been implanted with acoustic “pinger” tags. These pingers can be located by researchers using a specially developed hydrophone.

“By locating the fish on a regular basis and recording the location, water depth, presence of cover, type of bank and the water temperature, scientists will be able to let anglers know something about where the fish like to live”, said John Douglas, MAFRI project scientist.

The acoustic pinger tags are surgically implanted into the body cavity of the fish, making these fish difficult to identify by anglers. Therefore, the researchers are also marking the fish with a visible external pink dart tag, which is inserted into the back of the fish.

Anglers catching golden perch in Lake Eildon with a pink tag are asked to record the tag number and location of the capture and to return the fish to the water. The details can then be forwarded to

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 66, 30 May 2002

MAFRI at Snobs Creek (03) 5774 2208. Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 67, 13 June 2002 www.nre.vic.gov.au ISSN 1443-0606 Enforcing The Lake Mulwala/Ovens River Closure

Lake Mulwala is well known by freshwater anglers as a premier destination for native sports fishing. As previously advised in Fish Fax 64, there is currently a temporary ban on fishing in Lake Mulwala and the lower reaches of the Ovens River while maintenance works are undertaken on the weir wall and gate structure. In the second week of the closure a routine stop of a 4wd and trailer by Fisheries Officers found 2 men with newly fabricated wire fish traps (drum nets). The 2 nets, measuring 1800mm x 800mm, were seized by the officers and the men are to be charged on summons with possession of commercial fishing equipment and contravening the provisions of a fisheries notice. The area covered by the closure is well sign posted and the community as asked to be vigilant and report suspicious activities on 136 186.

Abalone Enforcement Outcomes

A person from St.Albans was convicted with imprisonment suspended for 2 years and placed on a community-based order for taking abalone for sale without authority and hindering an authorised officer. The offences were committed near Cape Schanck on March 2001.

Two people from Delahey were convicted and fined an aggregate of $2,000 each, had all equipment seized and forfeited for taking abalone for sale without authority, taking/possessing more than twice the abalone catch limit, failing to retain abalone in shell, shucking abalone in or under the water and for hindering an authorised officer. The offences were committed near Cape Schanck in March 2001.

A person from McCrae was fined an aggregate of $1,400 for taking/possessing more than twice the abalone catch limit, taking undersize fish, not having a recreational fishing licence, failing to cut abalone meat upon landing and for not having an abalone measuring instrument. The offences were committed near Portsea in July 2001.

Three people from St.Albans were each convicted and ordered to contribute towards service costs, placed on a community based order for 9 months and had all seized equipment forfeited for taking abalone for sale without authority, taking/possessing more than twice the abalone catch limit, failing to retain abalone in shell and for hindering an authorised officer. The offences were committed near Cape Schanck in March 2001.

A person from Clayton South with prior abalone convictions for possessing more than twice the abalone catch limit was convicted and fined an aggregate of $8,000 and had their equipment and motor vehicle forfeited for receiving abalone without authority and taking abalone during the closed season. The offences were committed in Clayton South in October 2001.

Fish-Fax Issue 67, 13 June 2002

Evaluating the Safety of New Antifouling Agents

MAFRI has received $111,500 from the Natural Heritage Trust for a new project to investigate the safety of new antifouling products to Australian native marine organisms. Antifouling agents are products that prevent the growth of marine organisms on ship hulls. This is essential for protecting the ship and preventing the unintentional transport of exotic marine species between ports.

Recently, there has been a call for a global ban on one of these antifouling products, tributyltin (TBT). TBT is probably one of the most toxic substances that has ever been introduced to the marine environment in recent times as it causes death, growth, behavioural and sexual abnormalities, reproductive failure and nervous system disorders in some marine organisms.

Australia has long been committed to the development of suitable alternatives to TBT for use as antifouling products. For example, the use of TBT-based paints on vessels smaller than 25 metres long was banned in Victoria in 1989.

At present, we do not have much information about the risks of exposing different antifouling products to Australia’s marine environment, and authorities are relying heavily on data obtained from overseas. These results may not be appropriate in Australian waters as we have our own unique and diverse ecosystems, which may respond differently.

The new MAFRI study will address this issue by evaluating the safety of new and currently used antifouling alternatives to TBT using local Australian temperate marine organisms.

Susan Duda, ecotoxicologist at MAFRI who will be supervising the project says, “we will aim to provide a ranking of the relative safety of several antifouling products in comparison to TBT”.

With a worldwide total ban on the use of TBT expected within a few years, there is an urgent need for the identification of the safest antifouling product that could be used in Australian waters.

“The outcomes of this project will directly assist government, industry and community in choosing new, safer antifouling alternatives, which will in turn, help to eradicate the use of dangerous antifouling agents, and ultimately ensure that our unique marine environment is adequately protected”, said Susan.

Victorian Water Levels Update

For the week ending June 7, 2002: Blue Rock 95% Fyans Lake 35% Nillahcootie 46% Buffalo Lake 30% Glenmaggie 34% Rocklands 13% Cairn Curran 22% Hume 11% Taylors 53% Dartmouth 83% Laanecoorie 34% Toolondo 4% Eildon Lake 19% Mulwala 1% Wartook 72% Eppalock 28% Mokoan 41% Waranga 36%

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 67, 13 June 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 68, 27 June 2002 www.nre.vic.gov.au ISSN 1443-0606 Environment Gateway

Everything Victorians ever wanted to know about the environment is now just a mouse click away following the launch of a world-class website - Environment Gateway www.environment.vic.gov.au

The Environment Gateway is a whole-of-government website that provides a one-stop-shop for people seeking information on Victoria's environment and sustainability issues.

With more than 500 links already established, the Environment Gateway has been designed to provide a single, seamless entry point to environmental information from State Government agencies, statutory authorities and other relevant sources.

The Environment Gateway is a useful tool for people interested in the environment and sustainability. Policy makers at local, state and federal levels, teachers and students, environment and community groups, and industry should all benefit from using the information available via this site.

ENRC Inquiry into Fisheries Management in Victoria

The first inquiry report, relating to co-management arrangements for Victorian fisheries, was tabled in Parliament on 5th December 2001.

The second report, which deals with sustainable management and enforcement, was tabled in Parliament on 12th June 2002. Both reports can be accessed from the Environment and Natural Resources Committee website at www.parliament.vic.gov.au/enrc.

Lake Modewarre Strategy

The Lake Modewarre Committee of Management has released a draft Lake Modewarre Environment and Recreation Strategy for public comment.

The draft strategy aims to address the environmental issues that threaten the water quality, environment and fishery in the lake and to guide the provision of additional and improved recreational facilities around the lake.

It can be viewed on the Corangamite Catchment Management Authority's website www.ccma.vic.gov.au. Comments are welcome and should be made by 5 July 2002.

Fish-Fax Issue 68, 27 June 2002

Small Waters Trout Stocking Program

To encourage fishing participation amongst disabled and junior anglers during the 2nd and 3rd semester school holiday period, Fisheries Victoria stocks on-grown trout into selected urban lakes and ornamental ponds in a project known as the “Small Waters Trout Stocking Program”.

The lakes selected for this stocking program are close to urban centres or regional towns and provide easy access for young and disabled anglers with fishing platforms, bankside tracks and a safe environment.

Angling clubs play an important role in the Small Waters program. As well as providing advice on the most appropriate waters for stocking, they assist in the release of the trout, organise junior and disabled fishing events and provide valuable feedback to the Department about the catch rate of stocked trout outside of the holiday period.

The most appropriate species for inexperienced anglers to target in these waters is rainbow trout. They are relatively easy to catch, are readily available from hatcheries and are stocked at a minimum weight of 150 grams – a size suitable for immediate capture.

Over 15,000 yearling trout are stocked into around 40 lakes and ponds annually as part of this Small Waters program. This complements the Fisheries’ Statewide stocking program that liberates more than one million fish annually to improve fishing opportunities for freshwater anglers.

Water Location Species Number Arboretum Dam Euroa Rainbow trout 300 Bartlett Lake Tatura Rainbow trout 200 Cummins Reserve Lake Yea Rainbow trout 200 Marysville Lake Marysville Rainbow trout 200 Sambell Lake Beechworth Rainbow trout 300 Kennington Reservoir Strathdale Rainbow trout 300 Tom Thumb Lake Eaglehawk Rainbow trout 100 Emerald Lake Emerald Rainbow trout 300 Jack Roper Reserve Campbellfield Rainbow trout 250 Roxburgh Park Lakes Roxburgh Park Rainbow trout 200 Rowville Lakes Rowville Rainbow trout 400 Taylors Lake Taylors Lakes Rainbow trout 200 Hanging Rock Lake Woodend Rainbow trout 400 Jubilee Lake Daylesford Rainbow trout 150 Jubilee Lake Skipton Rainbow trout 250 St. Georges Lake Creswick Rainbow trout 200 Tea Tree Lake Mortlake Rainbow trout 200 Guyatt Lake Sale Rainbow trout 250 Hyland Lake Churchill Rainbow trout 600 Brown trout 200 Morwell Lake Morwell Rainbow trout 500 Rawson Dam Rawson Rainbow trout 300

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 68, 27 June 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 69, 11 July 2002 www.nre.vic.gov.au ISSN 1443-0606 Upgrade For Patterson River Boat Launching Facilities

On 21st June, the Minister for Environment and Conservation, Sherryl Garbutt announced the allocation of $340,000 to improve parking and access to Patterson River Launching Way and upgrade four boat ramps.

The Patterson River is the busiest boat launching area in Victoria, attracting over 45,000 boat launches each year. Works include upgrading the existing car park and access roads with a combination of paving and permeable surfacing with clear line markings for traffic control from entry to launching lanes and the parking area. The upgrade of one boat ramp is currently under way, with three more to follow. A signage review is also taking place.

Ms Garbutt said Parks Victoria was also investigating the possible installation of around 20 additional temporary moorings for use in adverse weather.

The Recreational Boating Advisory Group allocated $300,000 over three years to upgrade parking and access facilities at Patterson River Launching Way, under the Boating Safety Grants Program. The Central Coastal Board also provided $40,000 to replace Boat Ramp Number 4.

For more information on the Patterson River upgrade contact the Parks Victoria Information Centre on 131963 or visit www.parkweb.vic.gov.au

Recreational Fishing Small Grants Program 2002

The Victorian Recreational Fishing Small Grants Program is an initiative of Sport and Recreation Victoria and VRFish that commenced in June 2000. The grants, of between $500 and $1,500, are designed to increase participation within the recreational fishing clubs in Victoria. The following sixteen clubs and associations will receive funding:

Cobden Amateur Angling Club Knox Boat Fishing Club Colac Tie & Try Fly Fishing Club Laburnum Angling Club Footscray & District Angling Club Nicholson Angling Club Geelong & District Angling Club Northern Suburbs Fly Fishing Club Geelong Fly Fishing Club Scuba Divers Federation of Victoria Geelong Gun & Rod Association Sunshine Fly Casting Club Inc. Greenhill Fly Fishers Inc. The Sands Angling Club Hobson Bay Sport & Game Fishing Club Warrnambool & District Angling Club

Fish-Fax Issue 69, 11 July 2002

Tagged Trevally Recaptures

VICTAG is an angler-based fish tagging program that was established by the Australian National Sportfishing Association (ANSA) in 1994.

Silver trevally (Pseudocaranx) is just one of the marine species that anglers have been tagging opportunistically.

Of 232 tagged trevally released near Portland, 11 have been recaptured (4.7%). Most were recaptured within the vicinity of Portland Bay. One was recaptured off Warrnambool after 242 days and one off Williamstown in Port Phillip Bay after 177 days.

Of 77 tagged trevally released near Apollo Bay, 7 have been recaptured (9.0%). Most were recaptured within the vicinity of Apollo Bay, but others have been recaptured off the Aire River (127 days), Lorne (232 days) and Port Melbourne (282 days).

Of 162 tagged trevally released in Port Phillip Bay, 6 have been recaptured (3.7%). All were recaptured within PPB close to their release location. The greatest movement was from Cape Schank to the Yarra River in 90 days.

Trevally tagged in Corner Inlet were recaptured there.

A tagged trevally released near the Snowy River moved east to Eden in 213 days.

The annual growth of trevally is 2-3cm per year for 20-32cm released fish.

Overall 611 trevally have been released and 28 have been recaptured and reported (4.6%).

On a related topic, anglers are reminded that a $500 prize will be given to one of the 320 fishermen who have reported the capture of a tagged snapper to MAFRI. Anyone who has recaptured a tagged snapper and not yet reported it should call the MAFRI hotline 1800 652 598 and leave their contact details and tag recapture information. The winner will be announced at the Annual General Meeting of ANSA in Geelong on July 13.

Port Phillip Bay Environmental Management Plan Released

In May 2002, DNRE released the Port Phillip Bay Environmental Management Plan, prepared in consultation with other agencies including Melbourne Water and the EPA.

The plan aims to reduce the annual load of nitrogen entering the Bay by 1,000 tonnes and includes a marine pest program that aims to prevent the establishment of new marine pests. Copies of the plan can be obtained from www.nre.vic.gov.au under “Coasts and Marine”, “Marine”, “Bays, Inlets, Estuaries & Lakes” then “Port Phillip Bay”.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 69, 11 July 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 70, 25 July 2002 www.nre.vic.gov.au ISSN 1443-0606 Project Funding From Recreational Fishing Licence Trust Fund

On 16th June, the Minister for Energy and Resources, Candy Broad announced $443,000 worth of grants to improve recreational fishing facilities across the State.

The 32 projects, funded from the Recreational Fishing Licence Trust Account, include new fishing platforms and cleaning benches, information signs, board-walks, fish habitat improvements, research and fish stocking programs.

This funding is part of about $850,000 being disbursed for projects over the next two years.

For a detailed list of projects go to www.nre.vic.gov.au/fishing and follow the prompts to the Minister’s media release.

Draft Native Fish Strategy 2002 – 2012 – Have Your Say

The Murray-Darling Basin Ministerial Council has approved the release of a draft Native Fish Strategy for the Murray-Darling Basin.

This Strategy seeks to initiate short, medium and long-term actions for rehabilitating native fish populations back to 60% of their estimated pre-European settlement levels after 50 years.

If you would like to obtain a copy of the draft Native Fish Strategy or a Fact Sheet, then email [email protected] Comments close on 31 December 2002.

Devilbend and Bittern Reservoirs – Have Your Say

After two years of studies and consultation, Melbourne Water has developed a draft master plan for the future management of the Devilbend site.

The draft plan incorporates six key themes: conservation, cultural heritage, visitor access and use, water and infrastructure, landscape and funding opportunities.

Melbourne Water is seeking feedback on the draft plan that is available from www.melbournewater.com.au/devilbend. Comments should be received by Friday 16th August 2002. Two information sessions will also be held during July in Mt. Eliza and Hastings. For more information contact Mr Tim Offor on 1800 655 702.

Fish-Fax Issue 70, 25 July 2002

NAIDOC Week - Murray Cod Release

Fisheries Victoria and the Aboriginal Communities of the Northern Irrigation Region (NIR) conducted a fish release during the recent National Aboriginal and Torres Strait Islander Observance Committee Week (NAIDOC) between the 7th and 14th July. DNRE staff and members of local Aboriginal communities released 25 Murray cod yearlings, with an average weight of 220 grams per fish, into each of the following locations: • Horseshoe Bend on the Little Murray River, • Loddon Weir on the Loddon River, • Rochester Weir on the Campaspe River, • Gowangardie Weir on the Broken River. The Indigenous Partnership Facilitator for NIR, Mr Rodney Carter said "People were amazed at the size of these fish that were around a year old". This activity gave the Aboriginal Communities and DNRE an opportunity to come together and share ideas about natural resource management.

MAFRI Research – Patagonian Toothfish

Most Australians know little about the Patagonian toothfish, except that it is incredibly valuable, fetching up to US$1,000 per fish, and it is the subject of continuing illegal fishing activity by “pirate” fishing vessels in Australian waters. The Australian toothfish fishery was established around Macquarie Island in 1994. Research is underway around Australia to gain an understanding of the biology, distribution, movement and abundance of toothfish to ensure that this fishery is sustainable.

To assist in gaining an understanding of the age and growth of this fish, MAFRI scientists are ageing between 500 and 1,000 Patagonian toothfish annually. Otoliths, or earbones, from the toothfish are sent to MAFRI’s Central Ageing Facility (CAF). The Australian Antarctic Division (AAD) collects most of the otolith samples in the fishing grounds around Macquarie Island and Heard Island, although the CAF has also aged toothfish samples from the Falkland Islands and South Georgia.

Initial work showed that the Patagonian toothfish was a difficult fish to age, as the rings on their otoliths were difficult to interpret. In order to verify the growth increments, the AAD tagged and released toothfish after injecting them with the harmless bone marking dye, strontium chloride. This dye leaves a mark on the otolith that is visible when viewed under a microscope. When commercial fishers recaptured these tagged fish, the otoliths were sent to the CAF for analysis. The time at liberty corresponded with the number of growth rings observed after the strontium mark on the otolith. This indicated that growth rings on the otoliths could be used as a reliable method to age toothfish.

To date, the CAF has aged over 5,000 toothfish. The oldest toothfish aged was 48 years old, however over the last few years fish over 30 years old have not been common. Research has shown that toothfish grow slowly, reaching over 2 metres in length and over 100 kg in weight. They also take a long time to reach sexual maturity – not breeding until at least 7-10 years old. This combination of longevity, slow growth and late sexual maturity make toothfish vulnerable to overfishing. As such, there are real concerns about the impact of high levels of illegal fishing on the toothfish stocks. Research such as that being undertaken by the CAF is therefore critical in helping scientists

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 70, 25 July 2002 understand more about the effects that fishing pressure may have on it. Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 71, 8 August 2002 www.nre.vic.gov.au ISSN 1443-0606 Lake Wendouree Trout Stocking

Each year, the Department shares the responsibility of stocking Lake Wendouree with the Ballarat Fish Acclimatisation Society. The Society normally stocks 6,000 yearling brown trout and the Department normally stocks 8,000 yearling rainbow trout. This cooperative approach has built one of Australia’s finest urban trout fisheries.

Unfortunately, the Society was only able to stock 2,500 yearling brown trout into Wendouree this year because of unusually high trout mortality at the hatchery.

On the 7th August, the Department released 3,500 brown trout yearlings that had been sourced from a hatchery that had a last minute order cancellation.

This release has been undertaken to ensure that the 12-month creel survey is not compromised by a variation to the stocking rate.

Anglers are reminded that the Salmonid Closed Season applies to Lake Wendouree and that the lake will re-open for trout fishing at midnight on 6th September 2002.

Lake Eildon Fish Habitat

A large stand of more than 250 dead trees standing on the exposed lake bed in the Goulburn Arm of Lake Eildon, near Jamieson, have been illegally felled in recent weeks.

Goulburn Murray Water and local police are investigating and intend to prosecute the offenders.

When submerged, standing vertical timber forms important habitat for aquatic organisms upon which fish feed. Standing timber also provides shelter for small fish and larger structure loving species such as redfin and golden perch.

Goulburn Murray Water are concerned that, as Lake Eildon’s water level increases in spring, the fallen trees and branches are likely to float, creating a threat to all forms of boating.

Angles are encouraged to report the illegal destruction or harvest of lake-side timber, particularly during the current dry spell when many impoundment levels are very low.

Fish-Fax Issue 71, 8 August 2002

Lake Murdeduke Trout Survey Results

Despite low water levels last year, Fisheries Victoria stocked Lake Murdeduke, near Winchelsea, with 9,000 yearling rainbow trout and 10,000 fingerling rainbow trout. The yearling rainbow trout were fin-clipped to distinguish them from the unmarked fingerlings.

With low rainfall and a low lake level, the Department has some concern that high summer water temperatures might have caused significant mortalities of stocked trout. Before any further trout stockings occurred this year, some indication of survival from last year’s stocking was warranted.

In early August, South-West Fisheries Officers surveyed the lake but failed to capture any rainbow trout. This is supported by anecdotal angler reports that suggest the fishing at Lake Murdeduke has been very poor.

Based on this information, Fisheries Victoria has suspended trout stockings into Lake Murdeduke until the water level rises significantly.

Lake Hamilton Fish Survey

The Department has a history of stocking Lake Hamilton with 3,000 brown trout yearlings annually.

In March 2000, estuary perch were added when 1,000 fingerlings (average weight of 4 grams each) were released as part of a stocking trial. Despite intentions to purchase more estuary perch in subsequent years, the Department was unable to obtain any more fingerlings from its Victorian supplier. Consequently, the ‘trial’ consisted of only one ‘year class’.

On 31st July, Portland Fisheries Officers and Queenscliff MAFRI staff surveyed Lake Hamilton to determine the survival and growth of stocked estuary perch and trout. The survey was timed to take advantage of the low water level that had resulted from maintenance works.

The survey captured:

No. caught Length range (mm) Weight range (g) Mean weight (g) Brown trout 17 295 - 540 300 – 2000+ 1150 Rainbow trout 13 385 - 420 700 - 1050 915 Redfin 101 195 - 365 115 - 900 426 Tench 2 360 - 385 800 - 870 835 Goldfish 1 205 n/a n/a

The majority of these trout survived the survey and were subsequently released after their lengths and weights were recorded. Despite the absence of estuary perch from the catch, local Fisheries Officers have been informed of two recent estuary perch captures by recreational anglers - the largest of these apparently measured 25cm. Lake Hamilton will be stocked later this year with 3,000 rainbow trout yearlings. Stocking of brown trout yearlings will resume next year when more are

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 71, 8 August 2002 available. Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 72, 22 August 2002 www.nre.vic.gov.au ISSN 1443-0606

Berwick Springs Estate Trout Release

On 14th August, the Minister for Energy and Resources, Candy Broad, assisted in the release of 1,000 yearling rainbow trout into Berwick Springs Estate Lake. These trout add to the 1,000 rainbow trout already released into the lake in May of this year.

The Department’s stocking program releases more than 1 million fish annually to enhance recreational fishing opportunities for freshwater anglers. These are a mixture of native and introduced fish species that are stocked into more than 130 waters throughout the State.

Rock Lobster and Giant Crab Management Planning

In late July 2002 the Rock Lobster and Giant Crab Steering Committee held its first meeting to identify issues that are to be addressed in the development of Victoria’s rock lobster and giant crab fisheries management plans. For a copy of the Chair's summary or a full transcript of the Minutes please contact Patrick Coutin, Executive Officer, Rock Lobster on 5258 0335, or Majella McIntosh, Executive Officer, Giant Crab on 9412 5718.

Port Phillip Bay – Proposal to Deepen the Channel

The Victorian Channels Authority (VCA) proposes to increase the depth of main commercial shipping channels that provide access to Port Phillip Bay and the Port of Melbourne. In view of the potential environmental impacts of the Channel Deepening Proposal the Minister for Planning, the Hon. Mary Delahunty MP, determined that an Environment Effects Statement (EES) is needed under the Environment Effects Act 1978. For more information visit http://www.vicchannels.vic.gov.au or contact Lisa Faldon on 9612 3533 or [email protected]

EPA Approves Upgrade of Eastern Treatment Plant

The EPA has recently approved a Melbourne Water proposal to upgrade the Eastern Treatment Plant at Carrum and extend the Boags Rocks outfall (near Gunnamatta Beach) to at least 2 kilometres offshore. The Works Approval requires Melbourne Water to improve the quality of treated wastewater from the facility, thus enhancing the potential for reuse. The extension of the Boags Rocks outfall is designed to reverse past impacts of the discharge on rock platforms in the vicinity of Boags Rocks and to ensure enhanced protection of amenity at the adjoining beach and in the surf zone. For more information visit www.epa.vic.gov.au/Waste/ETP/Default.asp or www.melbournewater.com.au

Fish-Fax Issue 72, 22 August 2002

MAFRI Research – Sand Flathead

Sand flathead are the species most commonly caught by recreational fishers in Port Phillip Bay, making up about 60% of the total recreational catch by number.

While they are often a by-catch for anglers targeting other species, such as snapper or whiting, flathead are a “bread and butter” catch, providing an easy feed for boat anglers.

In comparison, the commercial catch is only about 10% of the recreational catch.

During the 1990s, there were concerns that sand flathead numbers were in decline and that the average size of the fish had decreased. These concerns prompted MAFRI scientists to examine the population dynamics of sand flathead in Port Phillip Bay.

To gain basic biological information, the age of many thousands of fish was determined by examining growth rings on their ear bones. These data has revealed that sand flathead live for a lot longer than previously thought. The maximum estimated age for sand flathead is 23 years old.

MAFRI scientists have also found that the growth of sand flathead is highly variable meaning that big fish are not necessary old fish. The study revealed that a: • 7 year old female sand flathead could be anything between 22 and 37cm long, and • female sand flathead measuring 30cm could be between 3 and 23 years old.

The size of sand flathead was also influenced by its sex. Female sand flathead, the study showed, are larger on average than male sand flathead. Average size of male and female flathead were 23cm and 25 cm respectively. The minimum legal size limit for sand flathead is 25cm.

The study has shown that sand flathead are most common in the central basin of Port Phillip Bay, in waters with at least 17 m depth and become less abundant in shallower areas. Large female sand flathead, the study revealed, are most abundant in the shallower areas, while smaller male and female sand flathead are most common in the deeper regions of the bay.

Annual trawl surveys conducted by MAFRI have also revealed interesting patterns in the biology of sand flathead. Recruitment of sand flathead within Port Phillip Bay appears to be highly variable from year to year. Fish abundance can vary by as much 200% between years depending on the success of recruitment in previous years.

MAFRI scientists found that recruitment is highly correlated with environmental variables such as river discharge and long-term climate fluctuations predicted by the southern oscillation index, influences recruitment success and are collecting data to validate this theory.

For more information about sand flathead research, contact Matt Koopman at MAFRI on 5258 0342.

Recreational Fisheries Management Section

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 72, 22 August 2002

Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 73, 5 September 2002 www.nre.vic.gov.au ISSN 1443-0606 Inland Commercial Fisheries BuyOut

On 24th August, the Minister for Energy and Resources, Candy Broad, announced the buy-out of the 5 remaining Inland Fisheries Access Licences. This ends commercial fishing in 28 lakes near Kerang, Swan Hill, Jeparit and Elmore. On the basis of strong angler support, the Fisheries Revenue Allocation Committee (FRAC) recommended an allocation of $120,000 from the RFL Trust Account to fund the buy-out. The bulk of the nets previously used by these licence holders have been surrendered and collected by Fisheries Officers. Those nets not retained by the Department for fish survey work will be destroyed.

With the development of various irrigation systems and changes to water management, some of these lakes which historically periodically dried up, have become permanent and more important as wetlands, fish habitat and recreational destinations. Other waters that have now become saline sinks and diminished in value as fish habitat are now important wetlands for waterfowl.

To enhance recreational fishing opportunities, some of the lakes will now be considered for stocking with native fish species such as golden perch and Murray cod. Previously, the Department did not stock commercially fished waters.

MAFRI Research – Rock Flathead

Between February 2001 and January 2002, MAFRI and local fishers collected 1,200 rock flathead from Corner Inlet to gain more information about this species. These fish were measured, aged, sexed and had their reproductive organs taken for analysis. The work revealed that: • On average female rock flathead appear to grow faster and attain a greater size than males. • On average 5 year old female rock flathead have reached 39 cm whereas males are only 34 cm. • On average 10 year old female rock flathead are 48 cm and males are only 40 cm. • The oldest rock flathead caught in Corner Inlet was a 19 years old female that measured 55cm. • The longest rock flathead caught measured 57 cm - the species was thought to reach only 50 cm.

MAFRI scientists have also found that the growth of rock flathead is highly variable meaning that big fish are not necessary old fish. For example the study revealed that: • a 4 year old male rock flathead could be between 28 and 39 cm long, and • a female rock flathead measuring 40 cm could be between 4 and 10 years old. Rock flathead spawn from September through to February (most in October) and aggregate according to sex, with some of the catches being heavily dominated by males, and others by females. Similar patterns of aggregation have been observed in sand flathead from Port Phillip Bay and tiger flathead in offshore waters. For more information contact Matt Koopman at MAFRI on 5258 0342.

Fish-Fax Issue 73, 5 September 2002

MAFRI Haul Seine Research

Recreational anglers regularly express dissatisfaction with the commercial fishing sector based on a belief that their harvesting methods adversely affect non-target and under-size fish populations. However, a recently completed MAFRI study has found that very few small fish caught by haul seines die after being released. Haul seines nets are set in a large U-shape and then the ends are slowly drawn together to concentrate the fish and catch them in a pocket of the net called the bag. The method is used to catch fresh fish for local markets such as King George whiting, snapper, calamari, garfish, and black bream from areas such as Port Phillip Bay, Corner Inlet and the Gippsland Lakes.

As with many commercial fisheries, there was a growing public concern that haul seines captured and killed large numbers of undersized and unwanted fish species. As part of an experiment, fish that were discarded from the nets were placed in sea cages and monitored for a week. The experiments showed that the chances of survival for caught and released fish were very good, and survival across all species averaged 89%. A trial with small snapper that were caught and would have been released recorded 100% survival.

The study also found that nets made of polyethylene were over 20 times less likely to “mesh” undersized King George whiting than the more common nylon nets. Meshing is when fish are captured by their gill covers in the mesh of the net – mortality of these fish is usually quite high. By replacing the traditional nylon mesh with stiffer polyethylene mesh in the nets, fishers have been able to greatly reduce the numbers of young fish that become meshed in the nets. Fishers have been quick to switch to this new type net material.

The study also found that up to 60% of small fish simply avoid capture by passing through the seine nets. This showed fishers that their nets were actually quite selective for the sizes and types of fish that they were after. Results averaged across all species showed that for every 100 fish encountering the net: • 44 pass through without being caught, • 18 are retained and marketed, • 34 are released and survive and • 4 are released but die. Values for individual species vary from these averages. eg. For every 100 King George whiting encountering the net: • 66 pass through, • 21 are retained and marketed, • 11 are released and survive and • 2 are released but die.

The results challenge the public perception that haul seines frequently cause significant deaths of unwanted and undersized fish. When haul seines are used with care and fishers follow careful handling practices, the fishing technique is very efficient in terms of the proportion of the catch that is retained and marketed, compared to that which is released. For more information about this

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 73, 5 September 2002 project, contact Sandy Morison at MAFRI on 5258 0111. Recreational Fisheries Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 74, 19 September 2002 www.nre.vic.gov.au ISSN 1443-0606 The Future of Lake Mokoan

The Victorian Government recently reported on a study to identify potential water savings opportunities in the state’s bulk water supply systems. The study concluded that Lake Mokoan presents the clearest opportunity in those systems, due to the lake’s high evaporation and low utilisation. The savings (if feasible) would be a major source of water to offset increased environmental flows in the Snowy and Murray Rivers.

Subsequently the Government commissioned the Goulburn Broken Catchment Management Authority to manage a more detailed study of the future of Lake Mokoan. This study is addressing not only the feasibility of water savings, but also the lake’s poor water quality and its high operating costs. It is analysing the socio- economic implications of several options and the local environmental impacts, such as improved water quality and environmental flows in the Broken and Goulburn Rivers. No decision about the future of Lake Mokoan will be made until this important study is complete in June 2003.

For more information go to www.gbcma.vic.gov.au. Comments on the various management options being considered in the study should be sent to Mr Bernie Evans, VRFish, c/- PO Box 1237, Wodonga 3690 no later than 7th October 2002.

Victoria’s Marine Park and Sanctuary Strategy

Parks Victoria has prepared a draft Management Strategy for Victoria’s entire system of Marine Parks and Marine Sanctuaries that provides clear and consistent direction for Parks Victoria's management over the next 7 to 10 years.

Copies of the draft Management Strategy are available from www.parkweb.vic.gov.au or from the Parks Victoria Information Centre on 131 963. Written submissions close on 10th October 2002.

Minister Broad Launches Goulburn Eildon Fisheries Management Plan

On 6th September, the Minister for Energy and Resources, Candy Broad, visited MAFRI at Snobs Creek to officially launch the Goulburn Eildon Fisheries Management Plan.

The plan outlines the future management directions and arrangements for recreational fishing in Lake Eildon and its tributaries, the Eildon pondage and the Goulburn River and its tributaries downstream to and including Lake Nagambie.

Copies of the plan are available from the Customer Service Centre by calling 136 186.

While in the Thornton and Eildon area, Minister Broad also declared the trout season open, welcomed the participants of a trout research conference at MAFRI and inspected sites along the Goulburn River where river habitat and angler access improvements have been completed using RFL funds.

Fish-Fax Issue 74, 19 September 2002

Carp – A New Threat to the Glenelg River

Until recently, the Glenelg River was one of only a few Victorian river systems that remained carp-free. In February 2001, carp were discovered in the dissipation pit below the Rocklands Reservoir.

The Glenelg River is the largest river in southwest Victoria. Beginning in the Grampians Ranges it flows in a westerly direction before being intercepted by the Moora Moora and Rocklands Reservoirs near the township of Balmoral. On leaving Rocklands Reservoir, the Glenelg River flows southwest toward the coast, eventually meeting the sea at Nelson. It is one of Victoria’s Heritage Rivers.

The discovery of carp, a declared noxious species in Victoria, prompted a collaborative response from key stakeholders including the Glenelg Hopkins CMA, Wimmera Mallee Water, and both the Fisheries and the Flora and Fauna divisions of the NRE.

A netting survey conducted in Rocklands Reservoir yielded 86 carp. In an attempt to limit the spread of carp into the lower Glenelg River, a half-inch mesh grate was installed at the Five Mile Outlet. It has since been replaced with a stronger stainless steel grate.

Since the initial discovery, Fisheries staff have regularly surveyed the Glenelg River with one carp being recorded in the Glenelg River at the Five-Mile Outlet. Subsequent surveys have not yielded any carp in any sections of the river below Rocklands Reservoir.

Action is being taken to control carp in the Glenelg system before the population spreads and becomes self- sustaining throughout the system. The Glenelg Hopkins CMA recently engaged the Arthur Rylah Institute to investigate various management options for carp in the Glenelg River Basin. This study will provide the strategic and tactical advice needed by resource managers to deal with the issue. In the meantime, the screens will remain in place and fish surveys will continue.

Total eradication of carp from the Glenelg system is unlikely, however, controlling the carp population in Rocklands Reservoir and the upper Glenelg system may prevent carp migration and establishment in the lower Glenelg River and its tributaries.

For further information, please contact Melody Jane, Waterways Project Coordinator at the Glenelg Hopkins CMA on (03) 5562 6104 or email [email protected].

No Dam for the Mitchell River

On September 13th, the Minister for Environment and Conservation, Sherryl Garbutt announced the introduction of legislation to prevent the Mitchell River, which provides about one-third of the total flow into the Gippsland lakes, from being dammed.

Instead, some 2,160 hectares of land that was earmarked for the construction of a dam across the Mitchell River will be transferred to the Mitchell River National Park.

An adjacent 1500-hectare property is also being acquired for addition to the national park.

Recreational Fisheries Management Section

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 74, 19 September 2002

Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 75, 3 October 2002 www.nre.vic.gov.au ISSN 1443-0606 Have Your Say – Hume & Mulwala Fisheries Management

On 2nd October, the Victorian Minister for Energy and Resources, Candy Broad, and the NSW Minister for Mineral Resources and Fisheries, Eddie Obeid, announced the release of the ‘Joint Fisheries Management Arrangements for Lake Hume and Lake Mulwala’ consultation paper.

Both Ministers have agreed that Victoria should be responsible for Lake Hume and NSW for Lake Mulwala. This would end cross border confusion for anglers about the need to hold two fishing licenses and comply with different laws from each state depending on where they are fishing in these two lakes. Under the agreement: • only a Victorian fishing license will be needed for Lake Hume, • only a NSW recreational fishing license will be required for Lake Mulwala.

There will also be uniform seasonal closures as well as bag, size and gear regulations.

This apportionment means both states will retain license fees used to enhance recreational fishing through stocking programs, habitat improvement, recreational research and compliance.

Copies of the consultation paper are available from www.nre.vic.gov.au/fishing or by contacting the DNRE Customer Service Centre on 136 186. Public submissions close on 15th November 2002.

Creel Survey Commences at Lake Bullen Merri

In early September, Colac Fisheries Officers commenced a 12-month creel survey at Lake Bullen Merri, one of Victoria’s premier trout and salmon fisheries. In recent years, the Fisheries Division has stocked Lake Bullen Merri with four salmonid species – brown trout, rainbow trout, Atlantic salmon and Chinook salmon. A trial stocking of Australian bass, a native to coastal flowing streams, is also underway.

The creel survey involves interviewing anglers at the lake, during which time fisheries officers measure and weigh anglers’ catch and ask them questions about the anticipated duration of their trip, their fishing methods and their level of satisfaction with the fishery. With this catch information annual harvest estimates can be calculated for stocked species. Fisheries managers can compare these estimates with those collected in previous creel surveys to make informed decisions about what, if any changes are required to improve the fishery.

This creel survey is funded from the Recreational Fishing Licence Trust Fund.

Fish-Fax Issue 75, 3 October 2002

Snapper Biology and Movement in Victorian Coastal Waters Snapper are a highly valued fish that supports commercial and recreational fisheries in Port Phillip Bay, Western Port and coastal waters of Victoria. Low angling success during the 1990s, particularly for large snapper in Port Phillip Bay, and declining trends in commercial catches led to a public perception that Victorian snapper stocks were depleted.

MAFRI scientists undertook a study between 1998 and 2000 to investigate some areas of uncertainty such as trends in stock abundance, the relationships between snapper in Port Phillip Bay and coastal waters, and some basic biology such as the size and age of fish at maturity.

An extensive tagging study was undertaken, involving commercial fishers and volunteer anglers belonging to VICTAG. Nearly 13,000 snapper were tagged and released in Port Phillip Bay and coastal waters during the project. By the completion of the project 274 (2%) tagged snapper had been recaptured. The tagging data confirmed the existence of two snapper stocks in Victorian waters, separated at Wilson’s Promontory, but for the first time there is evidence of a low level of mixing between the two stocks.

This study has indicated that migration patterns in snapper change as they grow. For the western stock, large snapper (>38 cm) are the most mobile and many large fish move between western Victorian waters and Port Phillip Bay, and westwards as far as Kingston in South Australia. Medium sized snapper (30-38 cm) showed similar migration patterns, with some moving eastwards into the Bay. Small fish (<30 cm) did not disperse far from their nursery grounds, remaining in Port Phillip Bay and Portland Bay for the first 2 and 4 years respectively. Immature snapper from the eastern stock (Mallacoota Inlet), however, move eastwards into open coastal waters along the NSW coast within 1 or 2 years. The stock relationships of snapper found in or near Corner Inlet are still unclear.

Snapper in Victorian waters on average reach sexual maturity when they are 5 years old and are 42 cm in length. The oldest snapper recorded in the study was 32 years of age. The legal minimum length for snapper is 27cm. Total fecundity of snapper increased with fish size and age, with maximum reproductive potential increasing markedly between the ages of 7 and 14 years. Spawning occurs mostly in November/December.

Snapper recruitment in Port Phillip Bay was variable, with strong year classes occurring in some years. Recruitment success of snapper in Port Phillip Bay is correlated with higher April/June water temperatures and river flow after spawning. But the mechanisms behind these relationships remain unknown.

MAFRI scientists used standardised catch rate data of snapper long lines in Port Phillip Bay to examine commercial fishery trends over time. Although total catch and the amount of fishing effort have declined, there were no consistent trends in the catch rates between 1978 and 1999 and there continues to be a substantial number of size and age classes represented in the catches.

The data provided by this study will be incorporated into future snapper stock assessments, providing crucial information that will be used by the Fisheries Division for the management of sustainable

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 75, 3 October 2002 snapper fisheries in Victoria. Recreational Fisheries Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 76, 17 October 2002 www.nre.vic.gov.au ISSN 1443-0606 Proposed Recreational Fishing Only Reserves for Gippsland

On Friday 4th October, the Minister for Energy & Resources, Candy Broad, announced the commencement of public consultation on a proposal to create Fisheries Reserves in Mallacoota Inlet, Lake Tyers and Anderson Inlet. The proposal would require the cancellation of 4 commercial fishing access licences in Mallacoota Inlet and 3 in Lake Tyers.

The proposal aims to protect fish habitat and maintain fish stocks primarily for the benefit of recreational anglers, while still allowing for the commercial harvesting of bait and eels and the maintenance of other non-consumptive uses associated with these three estuaries.

In addition, the Government announced its commitment to the ongoing provision for recreational only fishing in Tamboon Inlet, Shallow Inlet and Sydenham Inlet as part of management planning for Croajingalong National Park, Shallow Inlet Marine and Coastal Park and Cape Conran Coastal Park.

To obtain a copy of the Consultation Paper visit www.nre.vic.gov.au or contact the NRE Customer Service Centre on 136 186. Comments must be received by 11th December 2002.

New MAFRI Research Facility at Queenscliff

On 7th October, the Minister for Energy and Resources, Candy Broad, unveiled the foundation stone for a new $18 million Marine and Freshwater Resources Institute (MAFRI) development at the 'Narrows' in Queenscliff. The complex will help boost MAFRI's capacity for national and international research, school and community education and eco-tourism opportunities. The new facility is expected to open early in 2004.

Barwon River Habitat and Access Improvements

On 7th October, the Minister for Environment and Conservation, Sherryl Garbutt, unveiled a $410,000 project that enhances the protection of white mangroves in the Barwon River and improves recreational, fishing and boating facilities in the area.

Works include the stabilisation of the Sheepwash and jetty banks, erosion control, fencing to protect mangroves and the planting of indigenous vegetation. Anglers will have access to the new Pelican Court boat ramp and Pelican Court fishing jetty.

For more information please contact the Parks Victoria Information Centre on 13 1963.

Fish-Fax Issue 76, 17 October 2002

MAFRI Research – Lake Dartmouth Trout

A recent MAFRI assessment of the Lake Dartmouth fishery suggest it is still one of Victoria’s best wild trout angling locations, holding self sustaining populations of both brown trout and rainbow trout.

Lake Dartmouth was formed in 1979 when an embankment was built on the Mitta Mitta River. Brown trout, rainbow trout and the threatened Macquarie perch all thrived in the newly formed lake during the 1980s.

However, during the late 1990s local angling groups expressed concerns this trout fishery was in decline and stocking was required to maintain the fishery.

In response to these concerns and a lack of recent scientific data about the status of this fishery, MAFRI has assessed the condition of Lake Dartmouth’s trout fishery, with particular emphasis on determining if stocking of trout was required.

The fishery assessment found brown trout was the most abundant of the nine fish species resident in the lake.

Scientists also concluded that there were adequate spawning areas for trout in the tributaries of Lake Dartmouth and that recruitment of brown trout appeared to be constant and adequate to support the population. Recruitment of rainbow trout however appeared more variable.

The assessment showed that there has been no decline in the population of trout in Lake Dartmouth since the 1980s. Current brown trout catches are comparable with historical catches. The estimated hourly catch rate for trout (brown and rainbow) was 0.24 fish per angler hour in 1984/85 and 0.27 fish per angler hour in 2000. Overfishing is not occurring.

There has been a shift in the size composition of the fishery. Whereas in the 1980’s the fishery produced a mix of medium sized trout and a few large trophy sized fish, the current trout fishery now produces large numbers of medium sized fish. This shift is thought to reflect changes in fish growth, which in turn is a result of a decrease in the productivity of Lake Dartmouth as it ages. “Production levels in man-made reservoirs are high immediately after the water is impounded, but after the initial bloom period, a decline of production occurs and is reflected in a decrease in the size of fish the lake can produce”, explained John Douglas, MAFRI’s project leader.

“Stocking of Lake Dartmouth with either brown trout or rainbow trout is not justified on a biological basis, ” says John, “as there is enough breeding in the tributaries of the lake to maintain the fishery and putting more fish in will not improve the overall size of the trout present.”

To maximise the fishing experience at Lake Dartmouth, John encourages anglers to continually explore different fishing methods, such as fly fishing wind-lanes. This technique is successful in other lakes but seldom seen in Lake Dartmouth. For more information about this project contact John Douglas at MAFRI on (03) 5774 2208.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 76, 17 October 2002

Recreational Fisheries Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 77, 31 October 2002 www.nre.vic.gov.au ISSN 1443-0606 MAFRI Research – King George Whiting Spawning Locations

Over the next 2 years MAFRI will receive funding from the RFL Trust Fund, together with a contribution from the Fisheries Division to continue locating the spawning grounds of King George whiting in Victorian coastal waters.

King George whiting are regarded as one of the most desirable inshore fin-fish species of southern Australia and they are keenly sought after by recreational fishers. The recreational whiting fishing is mostly located in Victorian bays and inlets and is based primarily on juvenile fish less than 4 years of age, which measure up to 40 cm in length. Spawning in Victorian bays and inlets has not been observed, and, despite their importance, it is still not known if King George whiting spawn in Victorian coastal waters.

Dr Greg Jenkins and his team of fish ecologists at MAFRI have spent the last 10 years deciphering the life history of King George whiting, identifying its larval and juvenile habitats within Victoria’s bays and inlets.

By counting the number of daily rings on the ear bones of larval King George whiting and using computer models of water current patterns in Bass Strait to track larval dispersal, Greg’s team identified possible King George whiting spawning grounds in coastal waters along a 300 km section of the western Victorian and South Australian coastline. The modelling also suggested that at least some juveniles of King George whiting found in Corner Inlet could have been spawned close to Wilson’s Promontory.

MAFRI hopes to enlist willing recreational fishers to assist in directly identifying possible whiting spawning locations along the Victorian coastline.

Coastal waters adjacent to Portland, Port Campbell, Apollo Bay, Torquay, Phillip Island and Wilson’s Promontory will be targeted. However, fishers catching King George whiting in ocean waters in any area along the Victorian coastline are encouraged to get involved. Fishers will be asked to retain adult King George Whiting caught between November and August, fillet the fish and “save” the carcasses by freezing them. The carcasses, containing the fish’s ear bone (used to determine its age) and reproductive organs (used to determine spawning condition) will be collected by MAFRI for analysis. This information will be used to directly identify the areas along the coastline of Victoria where, and the times at which, spawning by King George whiting may be taking place.

Recreational fishers wanting to be involved in the study should contact Paul Hamer on (03) 5258 0288 or 0409 334 395 to register their interest.

Fish-Fax Issue 77, 31 October 2002

Rock Lobster and Giant Crab Steering Committee

The Rock Lobster and Giant Crab Steering Committee has held its 3rd meeting to progress the development of fishery management plans for these species. The committee considered a number of issues including the management of the recreational fishery. The Chair's summary and Minutes from these meetings are available from www.nre.vic.gov.au or from Majella McIntosh on (03) 9412 5718.

MAFRI Research – Swan Bay Seagrass

Following a 2-year study, MAFRI scientists have concluded that seagrass fluctuations in Swan Bay are most likely to be caused by long-term climate cycles. Swan Bay is a small marine bay opening into Port Phillip Bay that is significant as a migratory wading bird habitat and as a nursery for juvenile fish. A significant portion of all seagrass in Port Phillip Bay is found in Swan Bay. Seagrass coverage in Swan Bay has varied from extensive and relatively dense in the early 1980s to patchy and extremely sparse in the mid 1990s.

Seagrass is thought to expand during droughts and calm weather when it can germinate and grow in clear water, gradually expanding its range. Storms cause flooding in catchment streams and deliver pulses of nutrients and sediment into the bay. Consequently, seaweed growth is promoted and seagrass is smothered and killed. Subsequent strong winds resuspend sediments because they are no longer stabilised by seagrass further reducing light penetration to seagrass and causing more seagrass loss. This cycle of seagrass loss and sediment re-suspension persists until the weather changes.

Recent seagrass loss in Swan Bay was probably initiated in 1992, which was the wettest year for 20 years. Thereafter several years of windy weather followed, promoting the cycle of seagrass loss and sediment re-suspension. Large areas devoid of seagrass were created which persisted until 1998. Seagrass began to re-establish in Swan Bay during 1998-1999, when rainfall totals were below average and zonal westerly winds were the calmest for 50 years. Seagrass growth has continued since. In 2002 seagrass cover in Swan Bay was similar to that mapped in 1980 and 2000, and in some areas, seagrass appears denser than in 2000.

Long-term climate predictions for south-eastern Australia suggest higher than average rainfall in the future with more falling in storm events. Over the last decade, significant plantings of native vegetation in the catchment by landholders will reduce the erosive impact of heavy rains and help to sustain Swan Bay seagrass. For more information contact Andy Longmore on 5258 0111.

Victorian Water Levels Update

For the week ending October 28, 2002: Blue Rock 95% Fyans Lake 34% Nillahcootie 48% Buffalo Lake 86% Glenmaggie 79% Rocklands 6% Cairn Curran 20% Hume 25% Taylors 26% Dartmouth 65% Laanecoorie 50% Toolondo 4% Eildon Lake 22% Mulwala 92% Wartook 83%

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 77, 31 October 2002

Eppalock 23% Mokoan 39% Waranga 44% Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 78, 14 November 2002 www.nre.vic.gov.au ISSN 1443-0606 Marine Parks and Sanctuaries

On the 16th November 2002, 13 Marine National Parks and 11 Marine Sanctuaries will be proclaimed. Parks Victoria has developed a series of signs and brochures about these marine protected areas to help anglers, and other recreational users, understand what activities are permitted and where. Signage is being erected at approximately 100 locations along the coast, adjacent to access points, boat ramps, car parks and at visitor information centres. Complimentary maps and information sheets for each of the parks will also be widely available from Visitors Information Centres and the Parks Victoria website.

Clear marking of park boundaries will ensure that anglers can identify where they may not fish. However, the diversity and physical nature of the marine environment, particularly along the open coast, poses an impediment to implementing a consistent "in water" marking system. Consequently, boundaries will be marked via a combination of (a) land-based signage and maps at key access points, (b) information sheets with maps (d) in-water navigational aids (e) yellow, triangular, reflective shore markers and (f) the incorporation of park boundaries into navigational charts and publications. For more information contact the Parks Victoria Information Centre on 13 1963 or visit www.parkweb.vic.gov.au

MAFRI Report on Lake Mokoan Released

On 30th October, the Minister for Energy and Resources, Candy Broad, released MAFRI’s Lake Mokoan Fisheries Assessment. This research aimed to assess the success of golden perch and Murray cod stockings. Major findings of the report are: • Lake Mokoan supports a relatively large population of golden perch. Catch rates are high compared to most recreational fisheries, however, high recreational catch rates may have been gained in a ‘trade-off’ against growth rates. • Golden perch grow relatively slowly in Lake Mokoan taking 4-7 years to reach the current legal length of 30cm. Murray cod are present in the fishery and some have reached the legal minimum size of 50cm in 4 years. • Poor growth of golden perch is likely to be primarily a result of high stock density. • Conditions in the lake appear to be suitable for carp, and they have been present for over 20 years, but they are still caught at low levels compared to golden perch. Natural recruitment of carp over the last two years appears to have been limited. • Redfin were initially abundant at Lake Mokoan, but catches of redfin are now very rare.

A copy of the assessment report can be down-loaded from ‘Fishing & Aquaculture’ section of the Department’s website at www.nre.vic.gov

Fish-Fax Issue 78, 14 November 2002

Drought Impacts on Inland Recreational Fisheries

The continuing drought is likely to have adverse impacts on the State’s inland recreational fisheries this summer, as many impoundments are dry or at all time low levels.

Boat ramps at many of the premier fisheries are already out of the water with forecasts of further water level reductions anticipated.

Low water levels are expected to lead to warmer than usual water temperatures, more severe blue green algae blooms and increasingly stressed aquatic life, including fish, in impoundments and rivers. Waters in the Wimmera, north-east and north-central are likely to be worst affected.

NRE, as lead agency on the interdepartmental committee looking into impacts of the drought, will establish contingency plans that identify resource needs and associated funding requirements to address possible fish kills resulting from the drought. These plans will be developed on the basis that clean-ups will be joint efforts between water managers, NRE, anglers (VRFish) and possibly local government.

Fisheries staff will also be working with stakeholders to develop monitoring programs and drought recovery plans for those waters affected by the current drought.

The majority of the Department’s trout stocking program is now complete for this year, however many changes to this summer’s native fish stocking plans are currently being discussed with VRFish in light of the rapidly worsening conditions.

Eildon Pondage Trout Stocking Advanced

NRE has advanced the stocking of large numbers of big trout into the Eildon pondage in an effort to beat anticipated warm water releases from Lake Eildon.

Ordinarily the Department would release these large trout in small batches between now and January however, without rain and inflows, low water levels in Lake Eildon may lead to warm water releases into the pondage later this summer. In order to maximise the number of fish available to anglers before the water gets too warm, NRE has advanced the scheduled release to maintain the trophy trout fishery to which anglers have become accustomed.

The Victorian Recreational Fishing peak body (VRFish) and Eildon Action have supported this change of plan in light of the drought conditions.

Several hundred 3-year-old brown trout and rainbow trout, weighing between 2.2 kilograms and 5 kilograms each, were released recently. These were stocked at various locations throughout the pondage to give all pondage anglers a fair chance. An additional 2,000 two-year-old trout will be released before the end of November. These will weigh between 500 grams and two kilograms each. Anglers are reminded that a daily bag limit of five trout per person exists for the Eildon pondage.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 78, 14 November 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 79, 28 November 2002 www.nre.vic.gov.au ISSN 1443-0606

Recreational Fishing Grants Program 2002/03

Each year, the sale of recreational fishing licences in Victoria raises around $3.8 million in revenue. Using these licence fees, the Fisheries Revenue Allocation Committee (FRAC) develops an annual Recreational Fishing Grants Program that provides funding to eligible projects that will improve recreational fishing in Victoria. With the exception of funding for 10 recreational fisheries officers and administrations of the program, all expenditure is on projects proposed to the FRAC. That is, the expenditure of RFL funds is dependent on quality applications for project funding.

Funding is available for RFGP projects in the following four project categories: 1. Recreational fisheries sustainability and habitat improvement (including fish stocking) 2. Recreational fishing access and facilities 3. Recreational fisheries related education, information and training 4. Recreational fisheries research

Funds will only be made available to statutory bodies and incorporated bodies, ie. Incorporated associations, registered companies and Government agencies. Funding is not available to individuals.

The closing date for the receipt of project proposals (in the prescribed format) for projects other than fish stocking is 28th February 2003. Proposals for fish stocking projects close on 17th January 2003.

RFGP application forms and related information are available from www.nre.vic.gov.au/fishing or by contacting Robert Krix, EO, Fisheries Revenue Allocation Committee on 9412 5714, Fax 9412 5714 or e-mail [email protected]

Written invitations to submit RFGP project proposals were recently extended to Victorian angling clubs, Municipal Councils, Catchment Management Authorities, Regional Water Authorities, TAFE Colleges and Universities, and some Committees of Management of Crown Land Reserves.

Previously successful project proposals include: • construction of fishing platforms and tracks (some with disabled access), • fish stocking in lakes and rivers, • installation of fish cleaning facilities near popular angling locations, • erection of signage, • removal of non-indigenous vegetation from riverbanks and replacement with native species, • river re-snagging • surveys of angler catches to determine the success of fish stocking trials.

Fish-Fax Issue 79, 28 November 2002

Identifying Important Food Sources for Fish in Western Port Bay

Recently, MAFRI completed a study to determine which habitats within Western Port Bay were of importance in producing food for fish and of those, which were the most important producers of detritus - the decayed vegetable matter that sustains food webs in this bay. To do this, scientists used chemical analysis of seagrass to track the transfer of organic matter through food webs.

MAFRI researchers identified, for the first time, that in addition to Zostera/Heterozostera, the seagrass Amphibolis makes a significant contribution to fish food webs in Western Port Bay. This result was surprising because Amphibolis is found only in the deeper waters at the exposed entrances of the bay. Garfish, yellow-eye mullet and sand flathead, are pelagic/benthic feeders dependent on Amphibolis, seagrass epiphytes, zooplankton and green algal detrital webs.

While the study confirmed that seagrass is an important food source for fish in Western Port Bay, it showed that none of the fish species examined were exclusively dependent on it. Algae growing on seagrass were identified as an equally important food source for seven of the eight species studied. King George whiting, flounder, grass whiting and rock flathead are primarily benthic feeders ultimately dependent on Zostera/Heterozostera and Amphibolis.

Algae were also found to make a significant contribution to fish food webs in Western Port Bay particularly for pelagic piscivore species such as Australian salmon.

The smallest contributions to fish food webs in Western Port Bay were made by mangroves and saltmarsh. The results of the study highlight the importance of the seagrass and algal complexes within Western Port Bay for fish production. For more information about this project contact Andy Longmore at MAFRI on 5258 0111.

Rock Lobster and Giant Crab Steering Committee

The Rock Lobster and Giant Crab Steering Committee has held its final meeting in the development of the management plans for the rock lobster and giant crab fisheries. The Chair's summary and Minutes from these meetings are available from Majella McIntosh on (03) 9412 5718.

Victorian Water Level Update

For the week ending November 25, 2002:

Blue Rock 94% Fyans Lake 32% Nillahcootie 46% Buffalo Lake 86% Glenmaggie 64% Rocklands 6% Cairn Curran 17% Hume 17% Taylors 17% Dartmouth 58% Laanecoorie 49% Toolondo 3% Eildon Lake 20% Mulwala 92% Wartook 78% Eppalock 20% Mokoan 35% Waranga 40%

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 79, 28 November 2002

Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 80, 12 December 2002 www.nre.vic.gov.au ISSN 1443-0606 Proposed Recreational Fishing Only Areas in Lake Tyers & Mallacoota - Update In response to calls from the Victorian Recreational Fishing peak body (VRFish) and other angling interests, an extensive consultation process on the establishment of three Fisheries Reserves was initiated on 4 October 2002. If supported, proposed reserves in Lake Tyers, Mallacoota Inlet and Anderson Inlet will be established to protect fish habitat and maintain fish stocks primarily for the benefit of recreational anglers. Adopting the proposal would involve the removal of the current fishery access licences that allow for commercial catching of scale fish in Lake Tyers and the Lower Lake of Mallacoota Inlet. Commercial collection of bait and fishing for eels in Mallacoota Lower Lake and Lake Tyers would still be permitted. As previously advised, public submissions on the proposal were accepted until yesterday (11th December 2002). These submissions from the public will be considered by the Minister along with formal advice sought from a range of interested bodies including the Fisheries Co-Management Council, VRFish (recreational fishing peak body) and Seafood Industry Victoria (commercial fishing peak body). Commercial fishing will continue in both Mallacoota Inlet and Lake Tyers until such time as the new Minister decides to proceed with the Fisheries Reserves proposal based on consideration of the advice received during the consultation process. Commercial fishing is currently permitted in Mallacoota Inlet all year round, while commercial fishing is only permitted in Lake Tyers from the Wednesday immediately following Easter until the 7th September each year. New Fisheries Officer for North East Victoria Matt McMahon has been appointed to a permanent Fisheries Officer position in Wodonga and will form part of the Eastern Operations Team.

‘This is a three-person team and covers rivers such as the Mitta, Kiewa, Ovens and King as well as Dartmouth dam and Lakes Hume and Mokoan,’ said Neville Fowler, Fisheries Manager for Northern Victoria.

The primary focus will be on waters of the upper north-east, however the position will also assist Fisheries Officers patrolling waters throughout northern Victoria.

‘Matt previously worked for NRE as a Plant Standards Officer in Swan Hill where his background in compliance and keen interest in fisheries management gave him a good foundation to begin his career as a Fisheries Officer. This new position will significantly improve service delivery to the angling public,’ Mr Fowler said.

Fish-Fax Issue 80, 12 December 2002

RFL Funded Projects Update

The RFL Trust Account will fund 45 projects totalling $833,000 under the Recreational Fishing Grants Program 2001/02. This includes 13 recreational fisheries’ sustainability and habitat improvement projects (including 9 fish stocking projects) 21 access & facilities projects, 2 education, information & training projects, and 9 recreational fisheries research projects. A number of projects are already well under way with already completed. Those completed include the: • removal of cumbungi at Seagull Paddock ‘Lake’ in Geelong to improve access for recreational fishers; • stocking of 5,000 yearling Atlantic Salmon in Lake Bullen Merri, near Camperdown, • stocking of 10,000 yearling Rainbow Trout into Tullaroop Reservoir, near Maryborough; • stocking of 2,000 yearling brown trout into the Moyne River, near Warrnambool; • stocking of Golden perch, Murray cod and Australian bass in various inland waters; • installation of directional signs to Lakes Modewarre, Bullen Merri, Purrumbete, Murdeduke and Colac; • sealing of road surface providing access to southern shore and jetty of Lake Bullen Merri.

Projects already well under way include the: • design, manufacture and installation of fishing rod holders and bait boards at Kerford Rd. pier, Lagoon pier, Mornington pier, and South pier, Queenscliff; • upgrading of existing facilities and introducing a recreational fishing litter reduction campaign at the ‘Warmies’, Newport; • clearing sections of exotic vegetation and establishing buffer zones along the Traralgon Creek; • the promotion of sustainable fishing practices to junior recreational fishers; and, • a state wide angler diary program to provide a time series of fishing catch and effort information and size/age composition data to be used in assessing recreational fishery trends and fluctuations.

Boat Speed Limit Introduced for Lake Eppalock

Goulburn Murray Water (GMW) has announced that all boating on Lake Eppalock will be reduced to a five-knot speed limit from 12th December 2002. The drought coupled with the use of the lake’s water for town, city and irrigation supplies has seen the lake level fall to very low levels. It will keep falling well into the summer unless good rains are received. Hazards to boating have been appearing everywhere and the interests of safety means reduced speeds to only 5 knots for all powered boats.

Like many water storages, Lake Eppalock has been hit by record low inflows of water. Under average conditions over 400,000 ML would have flowed into the lake over the last 24 months. The actual inflow has been 15,000 ML, only 3% of average. GMW has consulted extensively with Government agencies and stakeholders, including a meeting at which Eppalock club representatives supported the restriction on boating speed for this summer.

Boating will return to normal as soon as the lake’s levels recovers and hazards to boating have disappeared. For more information contact Ivan Smith at GMW on (03) 5475 2121 or 0419 896 687.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 80, 12 December 2002

Recreational Fisheries Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.

F i s h e r i e s D i v i s i o n FFiisshh--FFaaxx 'A fortnightly round-up of recreational fisheries management issues.' Issue 81, 27 December 2002 www.nre.vic.gov.au ISSN 1443-0606 Fisheries Division Joins Newly Formed Department of Primary Industries

As part of a significant restructure of Government departments following the election, the former Department of Natural Resources and Environment (NRE) has been split to create the new Department of Primary Industries (DPI) and the new Department of Sustainability and Environment (DSE). Under the new arrangements, Fisheries will be part of DPI, with portfolio responsibility resting with the Hon. Bob Cameron, the Minister for Agriculture.

Plans to Dredge Channels in Port Phillip Bay

Sections of the shipping channels in Port Phillip Bay and Corio Bay will be dredged under the direction of the Victorian Channels Authority (VCA). The ‘maintenance’ dredging program commenced late November 2002 and is expected to conclude late January 2003. In the past, maintenance dredging has been conducted on a one to two-year cycle. With new technology and changed methodology, the Victorian Channels Authority now undertakes maintenance dredging on a four to five year cycle. The dredging works are conducted in accordance with the VCA’s Coastal Management Act Consent for maintenance dredging which ensures that dredging and spoil disposal is undertaken to minimise environmental impact. The following areas are affected: • South Channel – eastern & western ends • Corio Channel & Point Henry Channel • Yarra River – Williamstown to Bolte Bridge • Port Melbourne Channel – between beacon #1 & #6 For more information visit the Victorian Channels Authority Website www.vicchannels.vic.gov.au/vca/news/pressarticle.asp?articleId=406

Australian Bass Stocking Update

On 29th November, 25,000 Australian bass fingerlings were released into Lake Bullen Merri, near Camperdown. On average, these fish weighed 1.2 grams each and will take 4 to 5 years to reach the minimum size of 25cm. MAFRI research indicates that some Australian bass stocked previously into Bullen Merri have already reached the legal minimum length.

More recently, on 11th December, 16,800 Australian bass fry were released into Lake Glenmaggie and 25,200 into Blue Rock Lake. These fish were produced via a co-operative effort between MAFRI and Shearwater aquaculture, a private commercial hatchery on Phillip Island.

Further stockings of ‘local’ strain bass are planned for Blue Rock and Glenmaggie as well as other waters in Gippsland later this summer.

Fish-Fax Issue 81, 27 December 2002

MAFRI Research – Macquarie Perch in Lake Dartmouth

The Macquarie perch is one of Australia’s rarer freshwater fish and is considered threatened. The preferred habitat of Macquarie perch is the cooler, upper reaches of the tributaries of the Murray- Darling river system. The survival of this species has been put at risk by the degradation of its natural stream habitats.

The largest natural population of Macquarie perch in Australia now resides in Lake Dartmouth, a man-made impoundment on the Mitta Mitta River in Victoria. The continued viability of this population is considered to be crucial to the survival of this species in the Murray-Darling system.

The Fisheries Division commissioned MAFRI to undertake an assessment of the Macquarie perch population and fishery in Lake Dartmouth. The investigation indicates all is not well for this population.

The results of the study show that while the numbers of perch fisherman has not changed markedly since the mid-1980’s, with approximately 1% of anglers specifically targeting Macquarie perch, the number of Macquarie perch taken by anglers has declined dramatically. In 1984/85 approximately 3,900 Macquarie perch were harvested compared with 130 in 2000.

“The study found that mortality attributed to angling is negligible, and this is supported by the low numbers of Macquarie perch estimated to be taken by recreational fishers,” says John Douglas, MAFRI’s Project Leader. “therefore current angling levels are unlikely to be the principal threat to the Macquarie perch in Lake Dartmouth.”

The size of Macquarie perch has declined and fish are now smaller for their age than was reported in the mid-1980s, when a 3-year-old fish measured 350 mm in length. A fish of this size today is likely to be 4 to 6 years old. This is probably a function of natural decreases in carrying capacity of Lake Dartmouth, as the productivity of man-made impoundments decrease with age.

Macquarie perch only spawn in running water. The only known successful spawning ground for Macquarie perch of Lake Dartmouth, is in the Mitta Mitta River upstream of the lake. While adult perch have been observed at the mouths of several other in-flowing rivers and streams, baby perch have only been collected from the Mitta Mitta arm. The amount and quality of spawning habitat in the Mitta Mitta River may influence the ability of the Macquarie perch population to breed successfully and highlights how critical the Mitta Mitta River is to the Lake Dartmouth Macquarie perch population.

“A combination of declining lake productivity, and variable spawning success is thought to be the most likely cause of the decline in Lake Dartmouth’s Macquarie perch populations”, John said.

For more information contact the Customer Service Centre – ph 136 186.

Fish-Fax Issue 81, 27 December 2002

John says, “Maintaining the Mitta Mitta arm and its natural flows and habitat will be crucial for the long term future of Lake Dartmouth’s Macquarie perch population. There is also an urgent need to determine whether the Macquarie perch population is limited by lack of spawning habitat and to investigate ways of preserving the population.” Recreational Fisheries Management Section Fisheries Division

For more information contact the Customer Service Centre – ph 136 186.