Iago omanensis   (Norman,  1939) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Elasmobranchii
Order:Carcharhiniformes
Family:Triakidae

Image copyrights: FAO

Description
Size: 37.0 cm TL (male/unsexed); 58 cm TL (female)

Color: Brown or grey dorsally, lighter below; dorsal and caudal fins may have darker tips and leading edges.

A small, rather slender shark with a stout, humpbacked trunk. Head flattened above and below. Anterior nasal flaps not barbel like. Intestinal valve with 4.10 turns. Supraorbital crest present. Subocular ridges obsolete. Origin of first dorsal over pectoral base. First dorsal base 0.4 times the upper caudal lobe and 1.2 times the second dorsal base. Preoral length 0.7 times the mouth width. Ventral caudal lobe short, 0.25 times the upper caudal lobe. Second dorsal nearly as long as first. Gill region expanded, the distance from the spiracle to the 5th gill slit 1.8 times the distance from the snout tip to the spiracle. Denticles on sides narrow, with a strong medial cusp and weak side cusps. Lateral teeth with short, oblique cusps but without cusplets.

Dioecious, internal (oviduct) fertilization, internal live bearers. Viviparous, placental. Distinct pairing with embrace.


Synonym (s)
Eugaleus omanensis Norman, 1939
(Senior synonym)
Galeorhinus omanensis Norman, 1939
(Senior synonym)
Jago omanensis (Norman, 1939)
(Misspelling)

Common Name (s)
• Bigeye Hound Shark (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries; utilized fresh for human consumption)

Ecology
Habitat:  Demersal
Trophic Level:  Tertiary Consumer
Prey:  Bony fishes (mostly lanternfishes), cephalopods and crustaceans
IUCN Status:  Least Concern

Biogeography


• INDIA
• SRI LANKA (Record: 10/1991-12/1993)
• Red Sea
• PAKISTAN
• Kerala, Kochi Fisheries Harbour INDIA (Record: 01/2008-06/2009) (Depth: 110-2195 mts)

Literature Source(s)
  • Venkataraman, K; Milton, MCJ and Raghuram, KP (2003) Handbook on sharks of Indian waters ZSI, Kolkata 1-113
  • UNEP World Conservation Monitoring Centre Available at - http://www.unep-wcmc.org/
  • Zoological Survey of India (Eds) (1991) Animal resources of India (Protozoa to Mammalia) ZSI 1-694 Available at - NCL, Pune
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Moron, J; Bertrand, B and Last, P (1998) A check-list of sharks and rays of western Sri Lanka Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 40(1&2) 142-157 Available at - NIO, Goa
  • Fischer, W and Bianchi, G (Eds.) (1984) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51) FAO, Rome 5 Available at - http://www.fao.org/docrep/009/ad468e/ad468e00.HTM
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/
  • Akhilesh, KV; Ganga, U; Pillai, NGK; Vivekanandan, E; Bineesh, KK; Shanis, CPR and Hashim, M (2011) Deep-sea fishing for chondrichthyan resources and sustainability concerns-a case study from southwest coast of India Indian Journal of Geo-Marine Sciences NISCAIR 40(3) 347-355 Available at - nopr.niscair.res.in/bitstream/.../1/IJMS%2040(3)%20347-355.pdf

Page last updated on:2012-02-17

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