Heptranchias perlo
(Bonnaterre,
1788) (Fish)
Organism information awaits expert curation
Image copyrights: Flescher, D.
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.
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)
• 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)
• Sharpnose Sevengill Shark (English)
Economic Importance and Threats
Importance: Commercial
(Fisheries)
Importance: Commercial
(Fisheries)
Ecology
Habitat: Demersal
Prey: Small sharks and rays, small bony fish, shrimps, crabs, lobsters, squid, and cuttlefish
IUCN Status: Near Threatened
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)
• 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
