Weight-Length Summaries for Western Australian Fish Species
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Fisheries Research Report No. 278 Weight-length summaries for Western Australian fish species derived from surveys of recreational fishers at boat ramps C.B. Smallwood, A. Tate and K.L. Ryan October 2018 8562 /15 Correct citation: Smallwood CB, Tate A, Ryan KL 2018. Weight-length summaries for Western Australian fish species derived from surveys of recreational fishers at boat ramps. Fisheries Research Report No. 278, Department of Primary Industries and Regional Development, Western Australia. 151pp. Enquiries: WA Fisheries and Marine Research Laboratories, PO Box 20, North Beach, WA 6920 Tel: +61 8 9203 0111 Email: [email protected] Website: www.fish.wa.gov.au A complete list of Fisheries Research Reports is available online at www.fish.wa.gov.au Important disclaimer The Chief Executive Officer of the Department of Primary Industries and Regional Development and the State of Western Australia accept no liability whatsoever by reason of negligence or otherwise arising from the use or release of this information or any part of it. Department of Primary Industries and Regional Development Gordon Stephenson House 140 William Street PERTH WA 6000 Telephone: (08) 6551 4444 Website: dpird.wa.gov.au ABN: 18 951 343 745 ISSN: 1035-4549 (Print) ISBN: 978-1-921258-10-7 (Print) ISSN: 2202-5758 (Online) ISBN: 978-1-921258-11-4 (Online) Copyright © Department of Primary Industries and Regional Development, 2018. First revision. 1681/18 ii Fisheries Research Report [Western Australia] No. 278 Table of Contents Executive Summary ............................................................................................ 1 1 Introduction ................................................................................................. 2 1.1 Background............................................................................................................ 2 1.2 Objective ................................................................................................................ 3 2 Survey Design and Analysis ....................................................................... 5 2.1 Biological Surveys ................................................................................................. 5 2.1.1 2011/12 ........................................................................................................ 6 2.1.2 2013/14 ........................................................................................................ 9 2.1.3 2015/16 ...................................................................................................... 13 2.2 Analysis ................................................................................................................ 13 2.2.1 Weight-Length Relationships .................................................................... 13 2.2.2 Fork Length-Total Length Relationships .................................................. 14 2.2.3 Average Total Length ............................................................................... 14 2.2.4 Average Weight ........................................................................................ 14 3 Results ........................................................................................................ 15 3.1 Estuarine .............................................................................................................. 17 3.1.1 Black Bream (Acanthopagrus butcheri) ................................................... 17 3.1.2 Southern Bluespotted Flathead (Platycephalus speculator) ..................... 18 3.1.3 Yellowtail Flathead (Platycephalus westraliae) ....................................... 19 3.1.4 Barramundi (Lates calcarifer) ................................................................... 19 3.1.5 Estuary Cobbler (Cnidoglanis macrocephalus) ........................................ 19 3.2 Nearshore ............................................................................................................. 20 3.2.1 Australian Herring (Arripis georgianus) ................................................... 20 3.2.2 Western Australian Salmon (Arripis truttaceus) ....................................... 21 3.2.3 Garfish (Hyporhamphus melanochir and Hemiramphus robustus) .......... 22 3.2.4 Tailor (Pomatomus saltatrix) .................................................................... 23 3.2.5 Blue Threadfin (Eleutheronema tetradactylum) ....................................... 24 3.2.6 King George Whiting (Sillaginodes punctata) ......................................... 25 3.2.7 School Whiting (Sillago bassensis, vittata and schomburgkii) ................. 26 3.2.8 Western Trumpeter Whiting (Sillago burrus) ........................................... 27 3.2.9 Mangrove Jack (Lutjanus argentimaculatus) ............................................ 28 3.2.10 Silver Trevally (Pseudocaranx dentex and P. wrighti) ............................. 29 3.2.11 Western Butterfish (Pentapodus vitta) ...................................................... 30 Fisheries Research Report [Western Australia] No. 278 iii 3.2.12 Western Yellowfin Bream (Acanthopagrus morrisoni) ............................ 31 3.2.13 Western King Wrasse (Coris auricularis) ................................................ 32 3.2.14 Brownspotted Wrasse (Notolabrus parilus) .............................................. 33 3.3 Inshore Demersal ................................................................................................ 34 3.3.1 Baldchin Groper (Choerodon rubescens) ................................................. 34 3.3.2 Bight Redfish (Centroberyx gerrardi) ...................................................... 35 3.3.3 Blue Morwong (Nemadactylus valenciennesi) ......................................... 36 3.3.4 Bluespotted Emperor (Lethrinus punctulatus) .......................................... 37 3.3.5 Brownstripe Snapper (Lutjanus vitta) ....................................................... 37 3.3.6 Goldband Snapper (Pristipomoides multidens) ........................................ 38 3.3.7 Pink Snapper (Chrysophrys auratus) ........................................................ 39 3.3.8 Rankin Cod (Epinephelus multinotatus) ................................................... 40 3.3.9 Red Emperor (Lutjanus sebae) .................................................................. 41 3.3.10 Spangled Emperor (Lethrinus nebulosus) ................................................. 42 3.3.11 West Australian Dhufish (Glaucosoma hebraicum) ................................. 43 3.3.12 Barcheek Coral Trout (Plectropomus maculatus) ..................................... 44 3.3.13 Common Coral Trout (Plectropomus leopardus) ..................................... 45 3.3.14 Breaksea Cod (Epinephelides armatus) .................................................... 46 3.3.15 Grass Emperor (Lethrinus laticaudis) ....................................................... 47 3.3.16 Redthroat Emperor (Lethrinus miniatus) .................................................. 48 3.3.17 Stripey Snapper (Lutjanus carponotatus) ................................................. 49 3.4 Offshore Demersal .............................................................................................. 50 3.4.1 Eightbar Grouper (Hyporthodus octofasciatus) ........................................ 50 3.4.2 Hapuku (Polyprion oxygeneios) ................................................................ 51 3.4.3 Ruby Snapper (Etelis carbunculus) .......................................................... 51 3.5 Pelagic .................................................................................................................. 52 3.5.1 Spanish Mackerel (Scomberomorus commerson) ..................................... 52 3.5.2 Samsonfish (Seriola hippos) ..................................................................... 53 3.5.3 Grey Mackerel (Scomberomorus semifasciatus) ...................................... 54 3.5.4 Blue Mackerel (Scomber australasicus) ................................................... 54 3.5.5 Yellowtail Scad (Trachurus novaezelandiae) ........................................... 55 3.5.6 Southern Bluefin Tuna (Thunnus maccoyii) ............................................. 56 3.6 Sharks ................................................................................................................... 57 3.6.1 Whaler Sharks (Family Carcharhinidae) ................................................... 57 3.6.2 Gummy Sharks (Mustelus antarcticus and M. stevensi) ........................... 57 3.6.3 Wobbegong (Family Orectolobidae) ......................................................... 57 3.7 Crustaceans.......................................................................................................... 58 iv Fisheries Research Report [Western Australia] No. 278 3.7.1 Western Rock Lobster (Panulirus cygnus) ............................................... 58 3.7.2 Mud Crab (Scylla olivacea and S. serrata) ............................................... 59 3.7.3 Blue Swimmer Crab (Portunus armatus) ................................................. 60 3.8 Molluscs................................................................................................................ 61 3.8.1 Abalone (Haliotis spp.) ............................................................................. 61 3.9 Cephalopods ........................................................................................................ 62 3.9.1 Squid (Order Teuthoidea)