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

 Hooktooth dogfish (Aculeola nigra)

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

 Photo

Hooktooth dogfish
No image of Hooktooth dogfish found in the Shark Database
 Range Map

Earth Map


 Systematics

Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Dogfish sharks (Squaliformes)
    Family: Dogfish sharks (Squalidae)
      Genus: Aculeola (Aculeola)


 Name

Scientific: Aculeola nigra
German: Hackenzahn-Dornhai
English: Hooktooth dogfish
French: Squale noir
Spanish: Tollo negro de cachos, Tollo negro


 Appearance

Small shark with very big eyes. Two dorsal fins with spines. Origin of first dorsal fin over the inner margins. Pectoral fins with rounded tips. No anal fin.

 Coloration

Blackish. White fin tips. Cloaca without luminous gland.

 Distribution

Only known in the Eastern Pacific off Peru and Chile.

 Biology

A little-known species. Lives preferably in benthic and epibenthic regions,at depths of 100 m to 600 m.

 Feeding

Unknown, probably fishes.

 Size

Maximum size about 60 cm, average size about 40 cm to 50 cm.

 Reproduction

Aplacental viviparous (ovoviviparous). Number of pups per litter is unknown, minimum 3 pups. Size at birth is between 13 cm and 14 cm. Males reach sexual maturity at 42 cm to 45 cm, females with 50 cm to 55 cm.

 Similar Species

Some species look similar and taxonomic features have to be used to clearly distinguish between the similar species.

 Endangerment

Status in the IUCN Red List(Version 2001):

Main criterion: > DD (Data Deficient)
Sub criterion:
Trend: Unknown


 Danger to Humans

Harmless.



 ^  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