HomeFish encyclopediaSharks and RaysBramble, Sleeper and Dogfish sharksSleeper sharksLongnose velvet dogfish Longnose velvet dogfish (Centroscymnus crepidater) Scientific name: Centroscymnus crepidater Barbosa du Bocage & de Brito Capello, 1864 The Longnose velvet dogfish (Centroscymnus crepidater) is a marine fish of the family Somniosidae. BiologyA fairly common species found on continental and insular slopes, on or near the bottom. Feeds mainly on fish and cephalopods. Ovoviviparous, with 4-8 young in a litter, born at 28-35 cm. The flesh is high in mercury; utilized as fishmeal and source of squalene.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCentroscymnus crepidaterFamilySomniosidae (Sleeper sharks)OrderSqualiformes (Bramble, Sleeper and Dogfish sharks)ClassElasmobranchii (Sharks and Rays)Maximum length130Depth range230–1500 m (755–4921 ft)EnvironmentMarine; bathydemersal; depth range 230 - 1500 mClimateDeep-waterDistributionEastern Atlantic: Iceland, Faeroe Islands along Atlantic slope to Portugal, Senegal, Madeira, Gabon to Democratic Republic of the Congo, Namibia. Indian Ocean: Aldabra and the Travancore coast of India. Western Pacific: New South Wales, Australia and New Zealand. Southeast Pacific: northern Chile.Conservation status (IUCN)Least Concern (LC)Threat to humansPoisonous to eatUsesFisheries: minor commercialResilienceVery Low, minimum population doubling time more than 14 years (Fec=4-8, tmax=54, tm=9-15) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026