HomeFish encyclopediaRay-finned fishesCarpsRiver loachesEightbarbel loach Eightbarbel loach (Lefua costata) Scientific name: Lefua costata Kessler, 1876 The Eightbarbel loach (Lefua costata) is a freshwater fish of the family Balitoridae. In the aquarium it needs water at 18–22°C (64–72°F). Native range: Asia, Lakes and rivers of Russian Far East, Korea, Northern Chian and Mongolia. Eightbarbel loach care at a glanceTemperature18–22°C (64–72°F) Species factsScientific nameLefua costataFamilyBalitoridae (River loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length9.8Common length5.3EnvironmentFreshwater; demersal; non-migratoryClimateTemperateDistributionAsia: Lakes and rivers of Russian Far East, Korea, Northern Chian and Mongolia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries:ResilienceHigh, minimum population doubling time less than 15 months (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