HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesDusky frillgoby Dusky frillgoby (Bathygobius fuscus) Scientific name: Bathygobius fuscus R?ppell, 1830 The Dusky frillgoby (Bathygobius fuscus) is a freshwater fish of the family Gobiidae. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 9-91; Anal spines: 1; Anal soft rays: 8. Dorsal fin plain and often with wide stripe.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBathygobius fuscusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.0EnvironmentMarine; freshwater; brackish; reef-associated; amphidromousClimateTropicalDistributionIndo-Pacific: Red Sea south to Bazaruto, Mozambique and east to the Line and Tuamoto islands, north to South Korea and southern Japan, south to the southern Great Barrier Reef. Does not occur in the Hawaiian Islands.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