HomeFish encyclopediaRay-finned fishesCarpsRiver loachesEastern crested loach Eastern crested loach (Nemacheilus longicaudus) Scientific name: Nemacheilus longicaudus Kessler, 1872 The Eastern crested loach (Nemacheilus longicaudus) is a freshwater fish of the family Balitoridae. In the aquarium it needs water at 10–22°C (50–72°F). Native range: Asia. Eastern crested loach care at a glanceTemperature10–22°C (50–72°F) Species factsScientific nameNemacheilus longicaudusFamilyBalitoridae (River loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length20.0EnvironmentFreshwater; benthopelagicClimateTemperateDistributionAsia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, 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