DOCSLIB.ORG

ARIID Ariu 2 1983 (=ARIID Ari 2) (Fishing Areas 57/71) FAO SPECIES IDENTIFICATION SHEETS FAMILY: ARIIDAE FISHING AREA 51 (W

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
ARIID Ariu 2 1983 (=ARIID Ari 2) (Fishing Areas 57/71) FAO SPECIES IDENTIFICATION SHEETS FAMILY: ARIIDAE FISHING AREA 51 (W click for previous page ARIID Ariu 2 1983 (=ARIID Ari 2) (Fishing Areas 57/71) FAO SPECIES IDENTIFICATION SHEETS FAMILY: ARIIDAE FISHING AREA 51 (W. Indian Ocean) Arius maculatus (Thunberg, 1792) OTHER SCIENTIFIC NAMES STILL IN USE: Arius falcarius Richardson. 1844 Taehysurus maculatus (Thunberg, 1792) VERNACULAR NAMES: FAO : En - Spotted catfish Fr - Machoiron tacheté Sp - Bagre manchado NATIONAL: DISTINCTIVE CHARACTERS: Dorsal profile of head as a steep slope to first dorsal fin base; 3 pairs of barbels around mouth, the maxillary pair extending to pectoral fin base (but becoming shorter in older specimens); head shield rugose and granulated from middle of or near posterior margin of orbit to supraoccipital process; supraoccipital process longer than broad at base with a median keel, its hind end nearly straight; median longitudinal groove deep, long, reaching base of supra- occipital process; predorsal plate V-shaped; premaxillary band of teeth on upper jaw 4 to 6 times as long as broad, mandibulary band of teeth on lower jaw deeply curved and narrowly interrupted; palate teeth granular or molarlike. in a single large, fully elliptical or semioval patch on each side (size of patch may vary greatly with age, in juveniles the granular teeth are few and sparse, the patch small and far behind the jaws). First dorsal fin and pectoral fins each with a strong spine, first dorsal fin ray often produced into a long filament; total anal fin rays 19 to 22. Colour: dark brown above, sides grey and belly whitish with dorsal view of head dusky spots, the whole body with a bright sheen. All fins black tipped. pectoral and pelvic fins dusky above, adipose mainly blackish. An occasional tinge of yellow may also be seen over the fin bases. DISTINGUISHING CHARACTERS OF SIMILAR SPECIES OCCURRING IN THE AREA: Arius arius: teeth on roof of mouth median maxillary forming an ovate, not fully formed patch longitudinal barbel short on each side. groove A. jella: anal fin rays 17 or 18 (19 to 22 in A. maculatus). A. tenuispinis: tooth patches ellip- tical, shoe-shaped, placed far back in buc- cal cavity; median longitudinal groove very long and deep running onto supra- occipital process. A. caelatus: teeth on roof of mouth villiform, in a single, roughly tri- angular patch on each side. A. platystomus A. subrostratus and A. sumatranus: teeth on roof of mouth in a small, oval patch on each side. Further- more, head depressed, snout duck-bill shaped in A. platystomus; maxillary bar- A. tenuispinis A. platystomus A. subrostratus bels very short, not extending beyond orbit in A. subrostratus. Other Arius species known to occur in India and/or Pakistan: have more than one (2 or 3) tooth patches on roof of mouth. Batrachocephalus mino: maxillary barbels absent. Osteogeneiosus militaris: only a pair of stiff, semiosseous maxillary barbels present. premaxillary tooth patch A. caelatus A. arius A. tenuipinnis A. sumatranus premaxillary and palate (roof of mouth) tooth patches A. maculatus SIZE: Maximum: 61 cm; common between 20 and 40 cm. GEOGRAPHICAL DISTRIBUTION AND BEHAVIOUR: Within the area, found off the west coast of India, Sri Lanka and Pakistan. Elsewhere, along the east coast of India, Bangladesh, Burma to the Indo-Australian archipelago (not occurring in the Philippines or Australia). Found in inshore waters and estuaries. Feeds on invertebrates and small fishes. PRESENT FISHING GROUNDS: Inshore waters and estuaries. CATCHES, FISHING GEAR AND FORMS OF UTILIZATION : Separate statistics are not reported for this species, Caught mainly with bagnets, dipnets, bamboo stake traps and with line gear. Marketed mostly fresh. ARIID Ariu 3 1983 (=ARIID Ari 3) (Fishing Areas 57/71) FAO SPECIES IDENTIFICATION SHEETS FAMILY: ARIIDAE FISHING AREA 51 (W. Indian Ocean) Arius sagor (Hamilton, 1822) OTHER SCIENTIFIC NAMES STILL IN USE : Tachysurus sagor (Hamilton, 1822) VERNACULAR NAMES: FAO : En - Sagor catfish Fr - Mâchoiron sagor Sp - Bagre sagor NATIONAL: DISTINCTIVE CHARACTERS: Dorsal profile of head somewhat convex just in front of first dorsal fin, but then straight to the rather short and rounded snout; 3 pairs of barbels around mouth, the maxillary pair extending to middle of pectoral fin; head shield strongly granulated and rugose nearly up to anterior margin of orbit, in both young and adults; supraoccipital process large, subcircular posteriorly, broader than long; median longitudinal groove shallow, reaching a little beyond posterior margin of eye; predorsal plate butterfly-shaped, distinctly large; premaxil- lary band of teeth in upper jaw 5 times as long as broad, mandibulary bano of teeth in lower jaw deeply curved and medially interrupted; palate teeth (on roof of mouth) villiform, in 2 patches, placed side by side at an angle, middle patches rounded, outer patches ovate, usually separated from each other, but middle patches may be confluent in some specimens. First dorsal and pectoral fins with a strong spine, predorsal plate tips of spines with a filamentous prolongation, total anal fin rays 17 butterfly-shaped to 19. Colour: dark brown above, sides grey and belly whitish with dusky spots, the whole body with a bright sheen; ail fins black tipped, dorsal view of head pectoral and pelvic fins dusky above, adipose fin mainly blackish; when fresh, narrow, vertical bands of spots on body may be present. DISTINGUISHING CHARACTERS OF SIMILAR SPECIES OCCURRING IN THE AREA: The presence of a large, butterfly-shaped predorsal plate readily distinguishes this species from all other sea catfishes occurring in the area. SIZE: Maximum: 45 cm; common between 20 and 40 cm. GEOGRAPHICAL DISTRIBUTION AND BEHAVIOUR: Within the area, found along the west coast of India and Pakistan. Elsewhere, occurring along the east coast of India, Bangladesh. Burma, Thailand. Malaya, Singapore, Indo- Australian Archipelago (but not occurring in Papua New Guinea or Australia). Found along the coastline, mainly around estuaries. Feeds mainly on invertebrates and small fishes. PRESENT FISHING GROUNDS: Shore waters around estuaries and rivers subject to tidal influence. CATCHES, FISHING GEAR AND FORMS OF UTILIZATION: Separate statistics are not reported for this species. Caught mainly with bagnets, shore seines and hook and line. Marketed mostly fresh. ARIID Ariu 4 1983 (=ARIID Ari 4) (Fishing Areas 57/71) FAO SPECIES IDENTIFICATION SHEETS FAMILY: ARIIDAE FISHING AREA 51 (W. Indian Ocean) Arius thalassinus (Rüppell, 1837) OTHER SCIENTIFIC NAMES STILL IN USE: Arius serratus Day, 1877 Tachysurus serratus (Day, 1877) Tachysurus thalassinus (Rüppell, 1837) Netuma thalassinus (Rüppell, 1837) VERNACULAR NAMES: FAO : En - Giant catfish Fr - Mâchoiron titan Sp - Bagre titán NATIONAL: adult juvenile DISTINCTIVE CHARACTERS: premaxillary and palatine (roof of mouth) tooth patches Dorsal profile of head sharply rising from occiput to first dorsal fin base; snout of varying shape: in males acute, pointed, with upper jaw longer than lower and premaxillary band of teeth exposed, in females rounded, jaws more or less equal, premaxillary band of teeth not so prominently visible; 3 pairs of barbels around mouth, the maxillary pair nearly reaching pectoral fin base; head shield weakly granulated and rugose, a prominent preorbital conical protuberance tapering as a wide V posteriorly; supraoccipitai process about 1.5 times as long as broad, its hind end slightly emarginate; median longitudinal groove short, wide anteriorly, extending to level of hind edge of opercle, not reaching to base of supraoccipital process; predorsal plate sharply rounded or conical; premaxillary hand of teeth in upper jaw 8 times as long as broad, mandibuiary band of teeth in lower jaw deeply curved and medially interrupted; palate teeth (on roof of mouth) williform, in 3 patches on each side, forming a triangle, posterior patch longest, Patches usually fused (may be slightly separated in juveniles). First dorsal and pectoral fins Dorsal view of head each with a strong spine, outer pelvic fin rays sometimes thickened in females; total anal fin rays 15 to 18. Colour: males are dark-red-brown to bluish-grey above, densely pigmented below, the whole body with a bronze lustre; numerous narrow, parallel transverse viridescent crossbands of greenish colour may be occasionally seen in fresh specimens; distal part of dorsal adipose, anal and caudal fins, as well as upper surface of pectoral and pelvic fins, dark. Females are uniformly dark or grey. DISTINGUISHING CHARACTERS OF SIMILAR SPECIES OCCURRING IN THE AREA: All other Arius species: have only 1 or 2 tooth patches on palate (roof of mouth). Batrachocephalus mino: maxillary barbels absent. Osteogeneiosus militaris: only a pair of stiff, semiosseous maxillary barbels present (no mental barbels). SIZE: Maximum: 185 cm; common between 25 and 70 cm. GEOGRAPHICAL DISTRIBUTION AND BEHAVIOUR: Within the area, found along the east coast of Africa (Mozambique channel and Tanzania), in the Red Sea, Gulf of Aden, Gulf of Oman, Pakistan, west coast of India and Sri Lanka. Elsewhere, from the east coast of India to Thailand, Singapore, China, the Philippines, Japan. North Australia, Queensland, Indonesia and Polynesia. A marine species often found in estuaries, but rarely entering freshwater. Feeds mainly on crabs, prawns, mantis shrimp (Squilla species) but also on fishes and molluscs. PRESENT FISHING GROUNDS: Coastal waters throughout the area, down to about 100 m depth. CATCHES, FISHING GEAR AND FORMS UTILIZATION: Separate statistics are not reported for this species. Caught mainly with
Load more

Recommended publications
  • (Niño 3.4 Index) in the West of Java Sea
    Available online at www.worldscientificnews.com WSN 117 (2019) 175-182 EISSN 2392-2192 SHORT COMMUNICATION Variability in fish catch rates associated with Sea Surface Temperature Anomaly (Niño 3.4 index) in the West of Java Sea Mega Syamsuddin*, Sunarto, Lintang Yuliadi, Syawaludin Harahap Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21 Jatinangor Sumedang Indonesia *E-mail address: [email protected] ABSTRACT The remotely derived oceanographic variables included sea surface height anomaly (SSHA), sea surface temperature (SST), chlorophyll-a (Chl a) and fish catches are used as a combined dataset to understand the ocean climate variability and further addresses their relations with the fish catches in the West-Java Sea. Fish catches and remotely sensed data are analyzed for the 5 years datasets from 2010- 2014 and emphasized the differences of climate conditions during El Niño Southern Oscillation (ENSO) events. Here, we demonstrate the prominent annual variation of two species small pelagic fish catches (Euthynus affinis and Scomberomorus commerson) and one demersal species (Netuma thallasina) as representative of dominant catch in the region. Small pelagic catches had significant increment during El Niño compared to during La Niña events. Changes in oceanographic conditions during ENSO events resulted in perceivable variations in catches, with an average catches of 839.6 t (E. affinis) and 273,7 t (S. commerson) during El Niño. During La Niña event catch rates were reduced with an average catches of 602.6 t (E. affinis) and 210.3 t (S. commerson). During the La Niña event was less favorable for small pelagic catches.
    [Show full text]
  • Stock Enhancement Activities in the Union of Myanmar
    Stock enhancement activities in the Union of Myanmar Item Type book_section Authors Win, Kyaw Myo Publisher Aquaculture Department, Southeast Asian Fisheries Development Center Download date 25/09/2021 20:31:29 Link to Item http://hdl.handle.net/1834/40487 Stock enhancement activities in the Union of Myanmar Win, Kyaw Myo Date published: 2006 To cite this document : Win, K. M. (2006). Stock enhancement activities in the Union of Myanmar. In J. H. Primavera, E. T. Quinitio, & M. R. R. Eguia (Eds.), Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern, Iloilo City, Philippines, 13-15 July 2005 (pp. 117-120). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center. To link to this document : http://hdl.handle.net/10862/2940 Share on : PLEASE SCROLL DOWN TO SEE THE FULL TEXT This content was downloaded from SEAFDEC/AQD Institutional Repository (SAIR) - the official digital repository of scholarly and research information of the department Downloaded by: [Anonymous] On: January 30, 2019 at 11:14 PM CST Follow us on: Facebook | Twitter | Google Plus | Instagram Library & Data Banking Services Section | Training & Information Division Aquaculture Department | Southeast Asian Fisheries Development Center (SEAFDEC) Tigbauan, Iloilo 5021 Philippines | Tel: (63-33) 330 7088, (63-33) 330 7000 loc 1340 | Fax: (63-33) 330 7088 Website: www.seafdec.org.ph | Email: [email protected] Copyright © 2011-2015 SEAFDEC Aquaculture Department. Stock Enhancement Activities in the Union of Myanmar Kyaw Myo Win Department of Fisheries, Sinmin Road Ahlone Township, Yangon, Union of Myanmar Introduction Exploitation of endangered species is strictly prohibited hence, there are no The geography of the Union of Myanmar recorded catches for these species.
    [Show full text]
  • A Review of the Systematic Biology of Fossil and Living Bony-Tongue Fishes, Osteoglossomorpha (Actinopterygii: Teleostei)
    Neotropical Ichthyology, 16(3): e180031, 2018 Journal homepage: www.scielo.br/ni DOI: 10.1590/1982-0224-20180031 Published online: 11 October 2018 (ISSN 1982-0224) Copyright © 2018 Sociedade Brasileira de Ictiologia Printed: 30 September 2018 (ISSN 1679-6225) Review article A review of the systematic biology of fossil and living bony-tongue fishes, Osteoglossomorpha (Actinopterygii: Teleostei) Eric J. Hilton1 and Sébastien Lavoué2,3 The bony-tongue fishes, Osteoglossomorpha, have been the focus of a great deal of morphological, systematic, and evolutio- nary study, due in part to their basal position among extant teleostean fishes. This group includes the mooneyes (Hiodontidae), knifefishes (Notopteridae), the abu (Gymnarchidae), elephantfishes (Mormyridae), arawanas and pirarucu (Osteoglossidae), and the African butterfly fish (Pantodontidae). This morphologically heterogeneous group also has a long and diverse fossil record, including taxa from all continents and both freshwater and marine deposits. The phylogenetic relationships among most extant osteoglossomorph families are widely agreed upon. However, there is still much to discover about the systematic biology of these fishes, particularly with regard to the phylogenetic affinities of several fossil taxa, within Mormyridae, and the position of Pantodon. In this paper we review the state of knowledge for osteoglossomorph fishes. We first provide an overview of the diversity of Osteoglossomorpha, and then discuss studies of the phylogeny of Osteoglossomorpha from both morphological and molecular perspectives, as well as biogeographic analyses of the group. Finally, we offer our perspectives on future needs for research on the systematic biology of Osteoglossomorpha. Keywords: Biogeography, Osteoglossidae, Paleontology, Phylogeny, Taxonomy. Os peixes da Superordem Osteoglossomorpha têm sido foco de inúmeros estudos sobre a morfologia, sistemática e evo- lução, particularmente devido à sua posição basal dentre os peixes teleósteos.
    [Show full text]
  • A Rapid Ecohydrological Assessment of the Ruvu River Estuary, Tanzania
    A Rapid Ecohydrological Assessment of the Ruvu River Estuary, T a n z a n i a 1 Tanzania Integrated Water, Sanitation and Hygiene (iWASH) Program 2 Mouth of the Ruvu Estuary looking out towards the Indian Ocean, photographed at high tide in June. A Rapid Ecohydrological Assessment of the Ruvu River Estuary, T a n z a n i a 3 Funding for the Rapid Ecohydrological Assessment of the Ruvu Estuary, Tanzania was provided by the people of the United States of America through the U.S. Agency for International Development (USAID), as a component of the Tanzania Integrated Water, Sanitation and Hygiene (iWASH) Program. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Agency for International Development of the United States Government or Florida International University. Copyright © Global Water for Sustainability Program – Florida International University This publication may be reproduced in whole or in part and in any form for educational or non-profit purposes without special permission from the copyright holder, provided acknowledgement of the source is made. No use of the publication may be made for resale or for any commercial purposes whatsoever without the prior permission in writing from the Global Water for Sustainability Program – Florida International University. Any inquiries can be addressed to the same at the following address: Global Water for Sustainability Program Florida International University Biscayne Bay Campus 3000 NE 151 St. ACI-267 North Miami, FL 33181 USA Email: [email protected] Website:www.globalwaters.net For bibliographic purposes, this document should be cited as: GLOWS 2015.
    [Show full text]
  • African Sharptooth Catfish Clarias Gariepinus
    African sharptooth catfish Clarias gariepinus 1 Taxonomy Species: Clarias gariepinus (Burchell, 1822) Family: Clariidae Order: Siluriformes Class: Actinopterygii African sharptooth catfish Clarias gariepinus is a typical air-breathing catfish with a scaleless, bony elongated body with long dorsal and anal fins, and a helmet like head (Figure 1). Colour varies dorsally from dark to light brown and is often mottled with shades of olive and grey while the underside is a pale cream to white (Skelton 2001). It can grow very large with a maximum reported length of 170 cm (IGFA 2001) and weight of 60 kg (Robbins et al. 1991). Figure 1. Lateral view of Clarias gariepinus (Source: FAO 2012). The genus Clarias was reviewed in the 1980s, which resulted in several widespread species being synonymized (Clarias capensis of southern Africa, C. mossambicus of central Africa and C. lazera of west and north Africa) under the name Clarias gariepinus (Teugels 1986). 2 Natural distribution and habitat The native range of C. gariepinus covers most of the African continent, with the exception of Maghreb, Upper and Lower Guinea, and the Cape provinces of South Africa (Picker & Griffiths 2011) (Figure 2). According to Skelton (2001) it is probably the most widely distributed fish in Africa. Jubb (1967) describes its natural distribution as occurring as far south as the Orange River system in the west and the Umtamvuna River in the east of South Africa. Page | 1 C. gariepinus is widely tolerant of many different habitats, even the upper reaches of estuaries, but is considered to be a freshwater species. It favours floodplains, slow flowing rivers, lakes and dams (Skelton 2001).
    [Show full text]
  • Fish, Amphibians, and Reptiles)
    6-3.1 Compare the characteristic structures of invertebrate animals... and vertebrate animals (fish, amphibians, and reptiles). Also covers: 6-1.1, 6-1.2, 6-1.5, 6-3.2, 6-3.3 Fish, Amphibians, and Reptiles sections Can I find one? If you want to find a frog or salamander— 1 Chordates and Vertebrates two types of amphibians—visit a nearby Lab Endotherms and Exotherms pond or stream. By studying fish, amphib- 2 Fish ians, and reptiles, scientists can learn about a 3 Amphibians variety of vertebrate characteristics, includ- 4 Reptiles ing how these animals reproduce, develop, Lab Water Temperature and the and are classified. Respiration Rate of Fish Science Journal List two unique characteristics for Virtual Lab How are fish adapted each animal group you will be studying. to their environment? 220 Robert Lubeck/Animals Animals Start-Up Activities Fish, Amphibians, and Reptiles Make the following Foldable to help you organize Snake Hearing information about the animals you will be studying. How much do you know about reptiles? For example, do snakes have eyelids? Why do STEP 1 Fold one piece of paper lengthwise snakes flick their tongues in and out? How into thirds. can some snakes swallow animals that are larger than their own heads? Snakes don’t have ears, so how do they hear? In this lab, you will discover the answer to one of these questions. STEP 2 Fold the paper widthwise into fourths. 1. Hold a tuning fork by the stem and tap it on a hard piece of rubber, such as the sole of a shoe.
    [Show full text]
  • Training Manual Series No.15/2018
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CMFRI Digital Repository DBTR-H D Indian Council of Agricultural Research Ministry of Science and Technology Central Marine Fisheries Research Institute Department of Biotechnology CMFRI Training Manual Series No.15/2018 Training Manual In the frame work of the project: DBT sponsored Three Months National Training in Molecular Biology and Biotechnology for Fisheries Professionals 2015-18 Training Manual In the frame work of the project: DBT sponsored Three Months National Training in Molecular Biology and Biotechnology for Fisheries Professionals 2015-18 Training Manual This is a limited edition of the CMFRI Training Manual provided to participants of the “DBT sponsored Three Months National Training in Molecular Biology and Biotechnology for Fisheries Professionals” organized by the Marine Biotechnology Division of Central Marine Fisheries Research Institute (CMFRI), from 2nd February 2015 - 31st March 2018. Principal Investigator Dr. P. Vijayagopal Compiled & Edited by Dr. P. Vijayagopal Dr. Reynold Peter Assisted by Aditya Prabhakar Swetha Dhamodharan P V ISBN 978-93-82263-24-1 CMFRI Training Manual Series No.15/2018 Published by Dr A Gopalakrishnan Director, Central Marine Fisheries Research Institute (ICAR-CMFRI) Central Marine Fisheries Research Institute PB.No:1603, Ernakulam North P.O, Kochi-682018, India. 2 Foreword Central Marine Fisheries Research Institute (CMFRI), Kochi along with CIFE, Mumbai and CIFA, Bhubaneswar within the Indian Council of Agricultural Research (ICAR) and Department of Biotechnology of Government of India organized a series of training programs entitled “DBT sponsored Three Months National Training in Molecular Biology and Biotechnology for Fisheries Professionals”.
    [Show full text]
  • Field Identification Guide to the Living Marine Resources in Kenya
    Guide to Orders and Families 81 lateral line scales above scales before dorsal fin outer margin smooth outer margin toothed (predorsal scales) lateral–line 114 scales cycloid ctenoidِّ scales circumpeduncular Schematic examples lateral line of typical scales scales below Common scale counts adipose fin finlets soft rays (segmented, spinyunbranched) rays or spines usually branched) (unsegmented, always Example of a continuous Accessory dorsal and anal dorsal fin of a spiny–rayed fish fins: adipose fin and finlets rounded truncate emarginate lunate side front side front from the dorsal and pointed and separated forked pointed soft rays (branched, spines (solid) segments, 2 halves) anal fins Construction Most common types of fin rays of caudal fins 82 Bony Fishes GUIDE TO ORDERS AND FAMILIES Order ELOPIFORMES – Tarpons and allies Fin spines absent; a single dorsal fin located above middle of body; pelvic fins in abdominal position; lateral line present; 23–25 branchiostegal rays; upper jaw extending past eye; tip of snout not overhanging mouth; colour silvery. ELOPIDAE Page 121 very small scales Ladyfishes To 90 cm. Coastal marine waters and estuaries; pelagic. A single species included in the Guide to Species.underside of head large mouth gular plate MEGALOPIDAE Page 121 last ray long Tarpons large scales To 55 cm. Coastal marine waters and estuaries; pelagic. A single species included in the Guide to Species.underside of head gular plate Order ALBULIFORMES – Bonefishes Fin spines absent; a single dorsal fin located above middle of body; pelvic fins in abdominal position; lateral line present; 6–16 branchiostegal rays; upper jaw not extending as far as front of eye; tip of snout overhanging mouth; colour silvery.
    [Show full text]
  • Download Article (PDF)
    A KEY FOR THE IDENTIFICATION OF THE CATFISHES OF THE GENUS TACHYSURUS LA CEPEDE, WITH A CATALOGUE OF THE SPECIMENS IN THE COLLECTION OF'THE INDIAN MUSEUl\l (ZOOIJ. SURV.). By MARY CHANDY, Department of Zoology, University of Delhi, Delhi. CONTENTS. Pa.20 Introduotion • 1 Key to the Indian species of the genus Tach.ysuru8 La Cepede 2 Catalogue of the Indian species of Tachysuru8 • 3 Geographical and Ecological Distribution (If the Indian species • • 18 INTRODUCTION. This paper is based on the collections of fishes in the Indian Museum of the genus Tachysurus, family Tachysuridae, order Siluroidea (Nema­ tognathi) and is one of the series of " Notes on the Siluroid Fishes of India, Burma and Ceylon", inaugurated by Dr. S. L. Hora. While working at the Zoologioal Survey of India as M;useum and Reference Collection Officer of the Central Marine Fisheries Research in 1947, Dr. -Hora, Director, Zoological Survey of India, suggested to me, to take up the study of a marine group, material of whioh is available in the collections of the Indian Museum, for the purpose of acquainting myself with the procedure and practice of fish-taxonomy. Accordingly, the genus Tachysurus, speoies of which constitute the most important marine Siluroids, from the commercial and economic points of view, was chosen. Since Day's work (1877) no attempt has been made to bring up-to-date the systematics and distrihution of the speoies in this genus. As the majority of the species are well-known, I have only attempted to give ,a key for identification, synonymy of eaoh speoies, with important notes on taxonomy and distribution.
    [Show full text]
  • Siluriformes) in Coastal Waters of Guinea
    BULLETIN OF MARINE SCIENCE. 56(1): 5M7,1995 AGE AND GROWTH OF THREE SPECIES OF ARIIDAE (SILURIFORMES) IN COASTAL WATERS OF GUINEA Frangois Conand, Sekou Balta Camara and Frangois Domain ABSTRACT The growth of three West African marine catfish, Arius heudeloti, A. parkii, A, latiscutatus (Siluriformes, Ariidae), was studied in Guinea by examining sections of the first dorsal spine. Age and growth interpretations were possible for fish up to 40 cm and the three species reveal a similar biology. A single annulus is formed each year at the beginning of the rainy season. Growth seems to be slow, and 40 cm fork length individuals are about 6 years old. These ariids can reach large sizes (80 cm or larger), which may indicate that the natural mortality is low. This adaptativeness is probably related to their strong body protection against predators, their low fecundity and egg incubation. Marine catfish have a high commercial value in Guinea and represent an im- portant fishery for coastal waters. Catch was estimated to 1,000 metric tons in 1990 (COPACE, 1991). Information on growth and age is needed along with other life history information for effective management, but little is known on west African species. Three species of marine catfish are found in Guinea, Arius heudeloti Valenci- ennes 1840, Arius parkii Günther 1864 and Arius Zutiscututus Günther 1864. They live on muddy bottoms in estuaries and in the sea inside the 20 m depth line along the western coast of Africa between 20"N and 20%. These ariids are char- acteristic of the Sciaenid community (Domain, 1989).
    [Show full text]
  • Giant Fish of the Mekong the Mekong River © Daniel Cheong / Executive Summary WWF Greater Mekong Programme ©
    Riverof Giants Giant Fish of the Mekong The Mekong River © Daniel Cheong / www.flickr.com Executive Summary WWF Greater Mekong Programme © The worlds biggest freshwater fish and 4 out of the top ten As ambassadors of the Greater Mekong region, vulnerable to giant freshwater fish species can be found in the Mekong River fishing pressure and changes in the river environment, the which flows through Cambodia, China, Lao PDR, Myanmar, status of the giant fish is one indicator of the health and Thailand and Vietnam. More giants inhabit this mighty river ecological integrity of the Mekong. The well-being of these than any other on Earth. species is therefore closely linked to the sustainable management of the region and to limiting the environmental Little is known about these magnificent species of the Greater impacts of increased regional economic activity and Mekong region, some attaining five metres in length and over integration. half a ton in weight. What is known is that their future is uncertain. Any impact on the ecological balance of the river also threatens the sustainability of the aquatic resources that support Populations of the Mekong giant catfish have plummeted 90 millions of people. There are at least 50 migratory species per cent in just two decades, whilst the giant dog-eating catfish which are highly vulnerable to mainstream dam development. is seldom seen now in the wild. Living amongst the new These make up between 40-70 per cent of the catch of fish in emerging economic powers of Asia, a combination of the Mekong. infrastructure development, habitat destruction and overharvesting, is quickly eroding populations of these The 1995 agreement of the Mekong River Commission should extraordinary species.
    [Show full text]
  • Annotated Checklist of the Freshwater Fishes of Kenya (Excluding the Lacustrine Haplochromines from Lake Victoria) Author(S): Lothar Seegers, Luc De Vos, Daniel O
    Annotated Checklist of the Freshwater Fishes of Kenya (excluding the lacustrine haplochromines from Lake Victoria) Author(s): Lothar Seegers, Luc De Vos, Daniel O. Okeyo Source: Journal of East African Natural History, 92(1):11-47. 2003. Published By: Nature Kenya/East African Natural History Society DOI: http://dx.doi.org/10.2982/0012-8317(2003)92[11:ACOTFF]2.0.CO;2 URL: http://www.bioone.org/doi/full/10.2982/0012-8317%282003%2992%5B11%3AACOTFF %5D2.0.CO%3B2 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Journal of East African Natural History 92: 11–47 (2003) ANNOTATED CHECKLIST OF THE FRESHWATER FISHES OF KENYA (excluding the lacustrine haplochromines from Lake Victoria) Lothar Seegers Hubertusweg, 11, D 46535 Dinslaken, Germany [email protected] Luc De Vos1 National Museums of Kenya, Department of Ichthyology P.O.
    [Show full text]