HomeFish encyclopediaRay-finned fishesCatfishEeltail catfishesSmallhead catfish Smallhead catfish (Euristhmus microceps) Scientific name: Euristhmus microceps Richardson, 1845 The Smallhead catfish (Euristhmus microceps) is a marine fish of the family Plotosidae. Native range: Eastern Indian Ocean, Endemic to Australia. BiologyA benthic species which occurs over soft bottoms of inshore waters.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEuristhmus microcepsFamilyPlotosidae (Eeltail catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)EnvironmentMarine; demersalClimateTemperateDistributionEastern Indian Ocean: Endemic to Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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