HomeFish encyclopediaRay-finned fishesCatfishSheatfishesEurasian catfish Eurasian catfish (Silurus biwaensis) Scientific name: Silurus biwaensis Tomoda, 1961 The Eurasian catfish (Silurus biwaensis) is a freshwater fish of the family Siluridae. Native range: Asia, Endemic to Lake Biwa, Japan. BiologyLargest species among the Japanese silurid fishes.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSilurus biwaensisFamilySiluridae (Sheatfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length118EnvironmentFreshwater; demersalClimateTemperateDistributionAsia: Endemic to Lake Biwa, Japan.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesGamefish: yesResilienceVery Low, minimum population doubling time more than 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