HomeFish encyclopediaRay-finned fishesCarpsRiver loachesEnigmatic loach Enigmatic loach (Ellopostoma mystax) Scientific name: Ellopostoma mystax Tan & Lim, 2002 The Enigmatic loach (Ellopostoma mystax) is a freshwater fish of the family Balitoridae. Native range: Asia, endemic to Thailand. BiologyInhabits mainstream rivers in sandy shore. Carnivorous, feeding on benthic microfauna. Length type is assumed in TL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEllopostoma mystaxFamilyBalitoridae (River loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length7.0EnvironmentFreshwater; demersalClimateTropicalDistributionAsia: endemic to Thailand.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