HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesDusky tripletooth goby Dusky tripletooth goby (Tridentiger obscurus) Scientific name: Tridentiger obscurus Temminck & Schlegel, 1845 The Dusky tripletooth goby (Tridentiger obscurus) is a freshwater fish of the family Gobiidae. Native range: Asia, Korean Peninsula and Japan. Reported from Sakhalin and Iturup Island, Russian Federation. BiologyInhabits both brackish and freshwater and may spend its whole life in freshwater. Caught for food.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTridentiger obscurusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length14.0EnvironmentMarine; freshwater; brackish; demersal; amphidromousClimateTemperateDistributionAsia: Korean Peninsula and Japan. Reported from Sakhalin and Iturup Island, Russian Federation.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceHigh, 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