HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsSculpinsSakhalin sculpin Sakhalin sculpin (Cottus amblystomopsis) Scientific name: Cottus amblystomopsis Schmidt, 1904 The Sakhalin sculpin (Cottus amblystomopsis) is a freshwater fish of the family Cottidae. Native range: Asia, Japan and the Russian Federation. BiologyDorsal spines (total): 8 - 9; Dorsal soft rays (total): 17-19; Anal spines: 0; Anal soft rays: 14 - 15Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCottus amblystomopsisFamilyCottidae (Sculpins)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length20.8Depth range0–10 m (0–33 ft)EnvironmentMarine; freshwater; brackish; demersal; amphidromous; depth range 0 - 10 mClimateTemperateDistributionAsia: Japan and the Russian Federation.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026