HomeFish encyclopediaSharks and RaysBramble, Sleeper and Dogfish sharksSleeper sharksSparsetooth dogfish Sparsetooth dogfish (Scymnodalatias oligodon) Scientific name: Scymnodalatias oligodon Kukuev & Konovalenko, 1988 The Sparsetooth dogfish (Scymnodalatias oligodon) is a marine fish of the family Somniosidae. Native range: Southeast Pacific. BiologyHolotype taken from a depth ranging from 0-200 m.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameScymnodalatias oligodonFamilySomniosidae (Sleeper sharks)OrderSqualiformes (Bramble, Sleeper and Dogfish sharks)ClassElasmobranchii (Sharks and Rays)Depth range0–200 m (0–656 ft)EnvironmentMarine; benthopelagic; depth range 0 - 200 mClimateSubtropicalDistributionSoutheast Pacific.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceLow, 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