HomeFish encyclopediaSharks and RaysBramble, Sleeper and Dogfish sharksSleeper sharksPortuguese dogfish Portuguese dogfish (Centroscymnus coelolepis) Scientific name: Centroscymnus coelolepis Barbosa du Bocage & de Brito Capello, 1864 The Portuguese dogfish (Centroscymnus coelolepis) is a marine fish of the family Somniosidae. In the aquarium it needs water at 5–13°C (41–55°F). Portuguese dogfish care at a glanceTemperature5–13°C (41–55°F) BiologyFound on continental slopes and abyssal plains. Feeds mainly on fish (including sharks) and cephalopods, also gastropods and cetacean meat. Ovoviviparous, with 13 to 29 young per litter, born at 27-31 cm. Utilized as fishmeal, dried and salted for human consumption, or as a source of squalene.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCentroscymnus coelolepisFamilySomniosidae (Sleeper sharks)OrderSqualiformes (Bramble, Sleeper and Dogfish sharks)ClassElasmobranchii (Sharks and Rays)Maximum length120Common length92.0Depth range150–3700 m (492–12139 ft)EnvironmentMarine; bathydemersal; depth range 150 - 3700 m, usually 400 - 2000 mClimateDeep-waterDistributionWestern Atlantic: Grand Banks to Delaware, USA; Cuba. Eastern Atlantic: Iceland south along Atlantic slope to the southwestern Cape coast of South Africa; also western Mediterranean. Western Pacific: off Japan, New Zealand, and Australia. Western Indian Ocean: Seychelles.Conservation status (IUCN)Near Threatened (NT)Threat to humansHarmlessUsesFisheries: minor commercialResilienceLow, minimum population doubling time 4.5 - 14 years (Fec=13-29) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026