HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesFlat-headed goby Flat-headed goby (Luciogobius guttatus) Scientific name: Luciogobius guttatus Gill, 1859 The Flat-headed goby (Luciogobius guttatus) is a freshwater fish of the family Gobiidae. Native range: Northwest Pacific, China, Korean Peninsula, Japan and Hong Kong. Also reported from Peter the Great Bay and the Kuril Islands. BiologyInhabits tide pools and river mouths. Is frequently encountered in places where small brooks fall into the sea and may occasionally be found in purely fresh water. During low tide it stays under stones on the dry bottom.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLuciogobius guttatusFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length9.5Depth range1 m (3 ft)EnvironmentMarine; freshwater; brackish; demersal; amphidromous; depth range 1 - ? mClimateSubtropicalDistributionNorthwest Pacific: China, Korean Peninsula, Japan and Hong Kong. Also reported from Peter the Great Bay and the Kuril Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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