HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesLarge-mouth goby Large-mouth goby (Redigobius macrostoma) Scientific name: Redigobius macrostoma G?nther, 1861 The Large-mouth goby (Redigobius macrostoma) is a freshwater fish of the family Gobiidae. Native range: Western Pacific, Australia. BiologyDorsal spines (total): 6 - 7; Dorsal soft rays (total): 7; Anal spines: 1; Anal soft rays: 6Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRedigobius macrostomaFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentMarine; freshwater; brackish; benthopelagic; amphidromousClimateSubtropicalDistributionWestern Pacific: Australia.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