Deutsche Seiten  
 Home  Preservation  Information  Foundation  Projects  Exhibit *  Database  Galleries  Links  Shark Info 
 * Search   Distribution   Phylogenetic Tree   Orders   Red List   Endangered Sharks  Sitemap  Sitemap 

 One-finned shark (Heptranchias perlo)

  Index
> Photo
> Range Map
> Systematics
> Name
> Appearance
> Coloration
> Distribution
> Biology
> Feeding
> Size
> Reproduction
> Similar Species
> Endangerment
> Danger to Humans

 Photo

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

Earth Map


 Systematics

Phylum: Vertebates (Chordata)

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


 Name

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


 Appearance

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

 Coloration

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.

 Distribution

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.

 Biology

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.

 Feeding

Fishes (such as hake), squid and crustaceans.

 Size

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

 Reproduction

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.

 Endangerment

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.



 ^  Top |  Home  Preservation  Information  Foundation  Projects  Exhibit *  Database  Galleries  Links  Shark Info 
© 2018 - 2018 Shark Foundation / Hai-Stiftung Last updated: 18/10/03 10:54 / Webmaster