HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesEstuary goby Estuary goby (Gobionellus microdon) Scientific name: Gobionellus microdon Gilbert, 1892 The Estuary goby (Gobionellus microdon) is a freshwater fish of the family Gobiidae. Native range: Eastern Central Pacific, Gulf of California to Panama. BiologyInhabits estuaries and brackish mangrove creeks. Also recorded from rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGobionellus microdonFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.0EnvironmentFreshwater; brackish; demersalClimateTropicalDistributionEastern Central Pacific: Gulf of California to Panama.Conservation status (IUCN)Least Concern (LC)Threat 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