HomeFish encyclopediaRay-finned fishesSalmonsSalmonidsEsei lake char Esei lake char (Salvelinus tolmachoffi) Scientific name: Salvelinus tolmachoffi Berg, 1926 The Esei lake char (Salvelinus tolmachoffi) is a freshwater fish of the family Salmonidae. Native range: Asia, Russia. Species factsScientific nameSalvelinus tolmachoffiFamilySalmonidae (Salmonids)OrderSalmoniformes (Salmons)ClassActinopterygii (Ray-finned fishes)Maximum length37.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionAsia: Russia.Conservation status (IUCN)Endangered (EN) (B1ab(iii,v))Threat 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