Heptranchias perlo   (Bonnaterre,  1788) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Elasmobranchii
Order:Hexanchiformes
Family:Hexanchidae

Image copyrights: Flescher, D.

Description
Size: Maximum probably to 137 cm, most adults below 110 cm.

Color: Grey-brown above, pale below, the young with dark tips on dorsal fin and terminal lobe of caudal fin, lost in adults.

A small, slender shark. Head with 7 gill slits; head and snout very narrow; eyes very large; teeth of upper and lower jaws unlike at sides of mouth, uppers smaller, narrower, with a main cusp and a few small cusplets, lowers larger, compressed and comb like, with a long main cusp and several cusplets, their inner edges with a few short cusplets but no serrations. A single dorsal fin, separated from origin of caudal fin by over twice its base length; a short lower caudal fin lobe in adults.

Dioecious, internal (oviduct) fertilization, internal live bearers. Ovoviviparous, number of young 9 to 20 in a litter. Size at birth about 25 cm. Distinct pairing with embrace. No apparent seasonality in its reproduction cycle.


Synonym (s)
Heptranchias angio Costa, 1857
(Junior synonym)
Heptranchias cinereus (Gmelin, 1789)
(Junior synonym)
Heptranchias dakini Whitley, 1931
(Junior synonym)
Heptranchias deani Jordan & Starks, 1901
(Junior synonym)
Heptrancus angio Costa, 1857
(Junior synonym)
Notidanus cinereus (Gmelin, 1789)
(Junior synonym)
Notidanus cinereus aetatis Bellotti, 1878
(Ambiguous synonym)
Notidanus cinereus pristiurus Bellotti, 1878
(Junior synonym)
Squalus cinereus Gmelin, 1789
(Junior synonym)
Squalus perlo Bonnaterre, 1788
(Senior synonym)

Common Name (s)
• Sharpnose Sevengill Shark (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries)

Ecology
Habitat:  Demersal
Prey:  Small sharks and rays, small bony fish, shrimps, crabs, lobsters, squid, and cuttlefish
IUCN Status:  Near Threatened

Biogeography


• South West Coast INDIA
• Kerala, Kochi Fisheries Harbour INDIA (Record: 01/2008-06/2009) (Depth: 0-1000 mts)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • 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
  • 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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