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 One-finned shark (Heptranchias perlo)

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One-finned shark
No image of One-finned shark found in the Shark Database
 Range Map

Earth Map


Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Frilled and cow sharks (Hexanchiformes)
    Family: Cow sharks (Hexanchidae)
      Genus: Heptranchias (Heptranchias)


Scientific: Heptranchias perlo
German: Spitzkopf-Siebenkiemerhai
English: One-finned shark, Perlon shark, Sevengill cow shark, Sharpnose sevengill shark, Sharpsnouted sevengill, Slender sevengill, Sharpnose sevengill shark
French: Requin perlon
Spanish: Canabota bocadulce


7 pairs of gill slits. Narrow, pointed head with large, green fluorescent eyes. One dorsal fin. Long caudal peduncle.


Greyish-brown on back, lighter ventral surface. Tip of dorsal fin and caudal fin can be dusky, prominent in young, absent or faded in adults.


Wide ranging in tropical and temperate seas. Western Atlantic: North Carolina to Cuba, Gulf of Mexico. Southern Brazil, Argentina. Eastern Atlantic: Morocco, Angola, western Mediterranean. Indian Ocean: South Africa, Mozambique, India. Western Pacific: Japan, Indonesia, Australia, New Zealand. Eastern Pacific: Chile.


Lives preferably in deeper waters over the continental shelves and upper slopes, usually between 25 m and 700 m depth. Can also be found close to the surface. This species is probably a strong swimmer.


Fishes (such as hake), squid and crustaceans.


Average size between 90 cm and 110 cm, maximum length about 135 cm.


Aplacental viviparous (ovoviviparous). 9 to 20 pups per litter. Size at birth is 25 cm. Males reach sexual maturity at about 85 cm, females at 90 cm.

 Similar Species

Can be mistaken for the , however the Broadnose seven gill has a distinctive color (numerous black spots over entire body), small eyes and is much bigger.


Status in the IUCN Red List(Version 2001):

Main criterion: > NT (Near Threatened)
Sub criterion:
Trend: Unknown

 Danger to Humans

Harmless, although bites when caught.

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