HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsBaikal oilfishesLongfin Baikal sculpin Longfin Baikal sculpin (Cottocomephorus inermis) Scientific name: Cottocomephorus inermis Yakovlev, 1890 The Longfin Baikal sculpin (Cottocomephorus inermis) is a freshwater fish of the family Comephoridae. In the aquarium it needs water at 4–20°C (39–68°F). Native range: Asia, Russia. Longfin Baikal sculpin care at a glanceTemperature4–20°C (39–68°F) BiologyDorsal spines (total): 8 - 10; Dorsal soft rays (total): 18-21; Anal spines: 0; Anal soft rays: 20 - 22Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCottocomephorus inermisFamilyComephoridae (Baikal oilfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length22.0EnvironmentFreshwater; pelagic; potamodromousClimateBorealDistributionAsia: Russia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 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