HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsBaikal oilfishesFat sculpin Fat sculpin (Batrachocottus nikolskii) Scientific name: Batrachocottus nikolskii Berg, 1900 The Fat sculpin (Batrachocottus nikolskii) is a freshwater fish of the family Comephoridae. Native range: Europe, Endemic to Lake Baikal, Russia. Species factsScientific nameBatrachocottus nikolskiiFamilyComephoridae (Baikal oilfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length24.0Depth range4–476 m (13–1562 ft)EnvironmentFreshwater; demersal; depth range 4 - 476 mClimateBorealDistributionEurope: Endemic to Lake Baikal, 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