HomeFish encyclopediaSharks and RaysBramble, Sleeper and Dogfish sharksRough sharksSailfin roughshark Sailfin roughshark (Oxynotus paradoxus) Scientific name: Oxynotus paradoxus Frade, 1929 The Sailfin roughshark (Oxynotus paradoxus) is a marine fish of the family Oxynotidae. Native range: Eastern Atlantic, Atlantic slope from Scotland to Senegal. BiologyFound on the continental slope. Probably feeds on small bottom invertebrates and fishes. Ovoviviparous.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOxynotus paradoxusFamilyOxynotidae (Rough sharks)OrderSqualiformes (Bramble, Sleeper and Dogfish sharks)ClassElasmobranchii (Sharks and Rays)Maximum length120Common length85.0Depth range265–720 m (869–2362 ft)EnvironmentMarine; bathydemersal; depth range 265 - 720 mClimateDeep-waterDistributionEastern Atlantic: Atlantic slope from Scotland to Senegal.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercialResilienceLow, minimum population doubling time 4.5 - 14 years (Fec assumed to be SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026