HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesClown goby Clown goby (Microgobius gulosus) Scientific name: Microgobius gulosus Girard, 1858 The Clown goby (Microgobius gulosus) is a freshwater fish of the family Gobiidae. Native range: Western Atlantic, Maryland to southern Florida and Texas in USA. BiologyInhabit quiet, muddy waters varying from fresh water to full salinity, but always occurs near water's edge and usually in or near estuaries.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicrogobius gulosusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.5Common length5.4EnvironmentMarine; freshwater; brackish; demersal; amphidromousClimateSubtropicalDistributionWestern Atlantic: Maryland to southern Florida and Texas in USA.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