HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesShadow goby Shadow goby (Acentrogobius nebulosus) Scientific name: Acentrogobius nebulosus Forssk?l, 1775 The Shadow goby (Acentrogobius nebulosus) is a freshwater fish of the family Gobiidae. Native range: Indo-West Pacific, East Africa through Indonesia to Micronesia, north to China and the Ryukyu Islands, south to northern Australia. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 9. Margins of median fins black.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcentrogobius nebulosusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length18.0EnvironmentMarine; freshwater; brackish; reef-associated; amphidromousClimateTropicalDistributionIndo-West Pacific: East Africa through Indonesia to Micronesia, north to China and the Ryukyu Islands, south to northern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansPoisonous to eatResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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