HomeFish encyclopediaRay-finned fishesCarpsRiver loachesGray loach Gray loach (Triplophysa dorsalis) Scientific name: Triplophysa dorsalis Kessler, 1872 The Gray loach (Triplophysa dorsalis) is a freshwater fish of the family Balitoridae. In the aquarium it needs water at 18–22°C (64–72°F). Native range: Former USSR. Asia, Xinjiang Autonomous Region, China. Gray loach care at a glanceTemperature18–22°C (64–72°F) BiologyUsually found in water with slow currents, river coves and lakes. Prefers dense weeds or quiet water.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTriplophysa dorsalisFamilyBalitoridae (River loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Common length12.0EnvironmentFreshwater;; pH range: ? - 7.0; dH range: ? - 15 benthopelagicClimateTemperateDistributionFormer USSR. Asia: Xinjiang Autonomous Region, China.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, 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