Sharpnose sevengill shark: Difference between revisions
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The '''sharpnose seven-gill shark''', ''Heptranchias perlo'', is a big eyed deepwater shark with seven gill slits on each side of its body. It is also known as the '''one-finned shark''', the '''perlon shark''', and the '''sevengill cow shark'''. |
The '''sharpnose seven-gill shark''', ''Heptranchias perlo'', is a big eyed deepwater shark with seven gill slits on each side of its body. It is also known as the '''one-finned shark''', the '''perlon shark''', and the '''sevengill cow shark'''. |
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== Physical |
== Physical characteristics == |
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The sharpnose seven-gill shark has a narrow head, and a single dorsal fin. Its tail is about half the length of its body, a third of its overall length. The shark's maximum length is 137 [[centimeter|cm]]. Females are usually about 90 cm and males are about 85 cm. At birth, the shark is 26 cm. Its colour can be grey, olive, or dun. The tips of juvenile's fins are darkly colored. This species' lower jaw contains comb-like teeth. |
The sharpnose seven-gill shark has a narrow head, and a single dorsal fin. Its tail is about half the length of its body, a third of its overall length. The shark's maximum length is 137 [[centimeter|cm]]. Females are usually about 90 cm and males are about 85 cm. At birth, the shark is 26 cm. Its colour can be grey, olive, or dun. The tips of juvenile's fins are darkly colored. This species' lower jaw contains comb-like teeth. |
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[[Atlantic]] coast from [[North Carolina]] to [[Florida]], and [[Brazil]] and [[Argentina]], the [[Gulf of Mexico]] and [[Cuba]], [[Africa]] from [[Angola]] north to [[Morocco]], most of the [[Mediterranean]] west of [[Greece]], [[Mozambique]], southwestern [[India]], southern [[China]] around [[Hainan]], southern [[Japan]] around [[Kyūshū]], eastern [[Java (island)|Java]], southern [[Australia]], [[Tasmania]], and [[New Zealand]]. |
[[Atlantic]] coast from [[North Carolina]] to [[Florida]], and [[Brazil]] and [[Argentina]], the [[Gulf of Mexico]] and [[Cuba]], [[Africa]] from [[Angola]] north to [[Morocco]], most of the [[Mediterranean]] west of [[Greece]], [[Mozambique]], southwestern [[India]], southern [[China]] around [[Hainan]], southern [[Japan]] around [[Kyūshū]], eastern [[Java (island)|Java]], southern [[Australia]], [[Tasmania]], and [[New Zealand]]. |
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== Habits and |
== Habits and habitat == |
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This deepwater shark is usually found between 27 and 1,000 [[meter|m]] but can be found near the surface. The sharpnose seven-gill shark is [[Ovoviviparity|Ovoviviparous]]. It is not a danger to humans unless caught while fishing when it will bite. |
This deepwater shark is usually found between 27 and 1,000 [[meter|m]] but can be found near the surface. The sharpnose seven-gill shark is [[Ovoviviparity|Ovoviviparous]]. It is not a danger to humans unless caught while fishing when it will bite. |
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==External links== |
==External links== |
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* [http://www.flmnh.ufl.edu/fish/Gallery/Descript/SnoseSgillShark/SnoseSgillShark.html The sharpnose sevengill shark] |
* [http://www.flmnh.ufl.edu/fish/Gallery/Descript/SnoseSgillShark/SnoseSgillShark.html The sharpnose sevengill shark] |
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*[http://gerber.iwarp.com/sharp7.htm Sharpnose seven-gill shark] |
* [http://gerber.iwarp.com/sharp7.htm Sharpnose seven-gill shark] |
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[[Category:Sharks]] |
[[Category:Sharks]] |
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[[Category:Hexanchiformes]] |
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[[Category:Hexanchidae]] |
[[Category:Hexanchidae]] |
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Revision as of 08:51, 20 April 2007
| Sharpnose sevengill shark | |
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| Drawing by Dr Tony Ayling | |
| Scientific classification | |
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| Species: | H. perlo
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| Binomial name | |
| Heptranchias perlo (Bonnaterre, 1788)
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The sharpnose seven-gill shark, Heptranchias perlo, is a big eyed deepwater shark with seven gill slits on each side of its body. It is also known as the one-finned shark, the perlon shark, and the sevengill cow shark.
Physical characteristics
The sharpnose seven-gill shark has a narrow head, and a single dorsal fin. Its tail is about half the length of its body, a third of its overall length. The shark's maximum length is 137 cm. Females are usually about 90 cm and males are about 85 cm. At birth, the shark is 26 cm. Its colour can be grey, olive, or dun. The tips of juvenile's fins are darkly colored. This species' lower jaw contains comb-like teeth.
Distribution
Atlantic coast from North Carolina to Florida, and Brazil and Argentina, the Gulf of Mexico and Cuba, Africa from Angola north to Morocco, most of the Mediterranean west of Greece, Mozambique, southwestern India, southern China around Hainan, southern Japan around Kyūshū, eastern Java, southern Australia, Tasmania, and New Zealand.
Habits and habitat
This deepwater shark is usually found between 27 and 1,000 m but can be found near the surface. The sharpnose seven-gill shark is Ovoviviparous. It is not a danger to humans unless caught while fishing when it will bite.
Diet
The sharpnose seven-gill shark feeds on bony fish, rays, small sharks, squid and crustaceans.
See also
References
- Template:IUCN2006 Database entry includes justification for why this species is near threatened
- "Heptranchias perlo". Integrated Taxonomic Information System. 23 January.
{{cite web}}: Check date values in:|date=and|year=/|date=mismatch (help) - Froese, Rainer; Pauly, Daniel (eds.). "Heptranchias perlo". FishBase. October 2005 version.
- FAO Species Catalogue Volume 4 Parts 1 and 2 Sharks of the World