Polydactylus sextarius   (Bloch & Scheider,  1801) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Perciformes
Family:Polynemidae

Image copyrights: FAO

Description
Size: 30 cm TL

Color: Body golden-olive above, silvery below. A large oval blotch is at the start of the lateral line. Inner sides of operculum dusky. Fins yellowish with black spots.

Body oblong and slightly compressed. Snout projecting; mouth large, with small teeth in jaws and palatines, no teeth on vomer. Eyes large, 3.0 to 3.8 times in head length. Two widely separated dorsal fin; first fin with 8 spines, the second fin with 1 spine and 12 or 13 soft rays. Anal fin with 2 or 3 spines and 12 or 13 soft rays. Pectoral fin in two parts, upper part with nearly all rays branched, lower part with 6 (variably 7 left or right) free filamentous rays of which the upper 2 are longest and extending to tip of pelvic fin. Caudal fin forked, with equal lobes. Scales small, ctenoid. Atrophied swim bladder, like a string. No upper lip. Lower lip well-developed except at symphysis. Operculum is broadly rounded, preoperculum coarsely serrated.


Synonym (s)
Polynemus sextarius Bloch, 1801
Polynemus sextarius mullani Hora, 1925
Filimanus heptadactyla (non Cuvier, 1829)
(Misapplied name)
Polydactylus sexfilis (non Valenciennes, 1831)
(Misapplied name)
Polynemus sextarius Bloch & Schneider, 1801
(Senior synonym)
Trichidion sextarius (Bloch & Schneider, 1801)
(Senior synonym)

Common Name (s)
• Blackspot Threadfin (English)
• Kutlikala (Tamil)
• Cheeral (Malayalam)
• Ravas (Marathi)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, gamefish)

Ecology
Habitat:  Demersal, Estuarine, Coastal
Prey:  Feeds mainly on small crustaceans (especially shrimps), fishes and benthic organisms, also on sponges and fish scales

Biogeography


• Orissa, Chilika Lake INDIA
• Maharashtra, Thane INDIA
• Tamil Nadu, Chennai Coast INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• West Bengal (Lat: 21.45) (Long: 87.9) INDIA

Literature Source(s)
  • Hiroyuki, M (2004) Annotated Checklists of Fishes: Family Polynemidae Rafinesque 1815 Annotated Checklists of Fishes 32 1-18 Available at - NCL, Pune
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • Rama Rao, KV (1995) Pisces Wetland ecosystem series 1: Fauna of Chilika lake ZSI, Calcutta 483-506 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Mishra, S; Bhalke, S; Pandit, GG and Puranik, VD (2009) Estimation of 210Po and its risk to human beings due to consumption of marine species at Mumbai, India Chemosphere Elsevier 76(3) 402-406 Available at - http://dx.doi.org/10.1016/j.chemosphere.2009.03.021
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 pp Available at - NIO, Goa
  • Biswas, KP (2009) Fishes around Indian Ocean Threadfin Bream (Nemipterus) Daya publishing house Available at - NIO,Goa
  • Das, P; De, SP; Bhowmik, RM; Pandit, IK; Sengupta, R; Nandi, AC; Thakurta, SC and Saha, S (2007) Piscine diversity of West Bengal Fishing chimes 27(5) 15-28 Available at - NIO, Goa

Page last updated on:2012-01-23

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