HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesBlackfin eel goby Blackfin eel goby (Taenioides nigrimarginatus) Scientific name: Taenioides nigrimarginatus Hora, 1924 The Blackfin eel goby (Taenioides nigrimarginatus) is a freshwater fish of the family Gobiidae. Native range: Asia, Malay Peninsula and the Mekong delta. BiologyOccurs along muddy bottoms of coastal rivers, estuaries, bays and lakes. Feeds on small crustaceans and other invertebrates. Not seen in the markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTaenioides nigrimarginatusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length23.0EnvironmentFreshwater; brackish; demersalClimateTropicalDistributionAsia: Malay Peninsula and the Mekong delta.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