HomeFish encyclopediaRay-finned fishesPerch-like fishLoach gobiesLoach goby Loach goby (Rhyacichthys aspro) Scientific name: Rhyacichthys aspro Valenciennes, 1837 The Loach goby (Rhyacichthys aspro) is a freshwater fish of the family Rhyacichthyidae. Native range: Asia and Oceania, Indonesia, Philippines, New Guinea, Solomon Islands, Taiwan and some Japanese islands. BiologyDorsal spines: 8; Dorsal soft rays: 8-9; Anal spines: 1; Anal soft rays: 8 - 9Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRhyacichthys asproFamilyRhyacichthyidae (Loach gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentMarine; freshwater; brackish; demersal; amphidromousClimateTropicalDistributionAsia and Oceania: Indonesia, Philippines, New Guinea, Solomon Islands, Taiwan and some Japanese islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026