HomeFish encyclopediaRay-finned fishesCarpsLoachesJonklaas' s loach Jonklaas' s loach (Lepidocephalichthys jonklaasi) Scientific name: Lepidocephalichthys jonklaasi Deraniyagala, 1956 Photo: https://www.seriouslyfish.com/species/lepidocephalichthys-jonklaasi/ The Jonklaas' s loach (Lepidocephalichthys jonklaasi) is a freshwater fish of the family Cobitidae. BiologyNot enough is known of the biology of this species. Inhabits shallow, slow-flowing rivulets, heavily shaded, with leaf debris. This fish is not visible from the water surface, being concealed beneath leaf debris. It is too rare to be of value to the aquarium trade which in any case exports large numbers of the superficially similar Lepidocephalus thermalis.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLepidocephalichthys jonklaasiFamilyCobitidae (Loaches)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length6.0EnvironmentFreshwater; demersal; non-migratory; depth range 0 - ? mClimateTropicalDistributionAsia: known only from the type locality in Wilpita, Akuressa in Sri Lanka; recent collections indicate presence of species in the Kalu River basin near Madakada and in the Kanneliya Reserve in the Gin River Basin, Sri Lanka.Conservation status (IUCN)Endangered (EN)(B1+2c, C1)Threat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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