HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersSlime flounder Slime flounder (Microstomus achne) Scientific name: Microstomus achne Jordan & Starks, 1904 The Slime flounder (Microstomus achne) is a marine fish of the family Pleuronectidae. Native range: Northwest Pacific, central Japan northward, southern Kuril Islands, Sakhalin, Sea of Japan, the Yellow Sea, Gulf of Bo Hai and East China Sea. Species factsScientific nameMicrostomus achneFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length60.0Depth range15–800 m (49–2625 ft)EnvironmentMarine; demersal; depth range 15 - 800 m, usually 20 - 610 mClimateTemperateDistributionNorthwest Pacific: central Japan northward, southern Kuril Islands, Sakhalin, Sea of Japan, the Yellow Sea, Gulf of Bo Hai and East China Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.08-0.11) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026