HomeFish encyclopediaRay-finned fishesFlatfishesTonguefishesRed tonguesole Red tonguesole (Cynoglossus joyneri) Scientific name: Cynoglossus joyneri G?nther, 1878 The Red tonguesole (Cynoglossus joyneri) is a marine fish of the family Cynoglossidae. Native range: Northwest Pacific, Korea and southern Japan to the Yellow Sea and South China Sea. BiologyFound in the sublittoral zone (incl. semi-enclosed sea areas) on sandy mud bottoms.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCynoglossus joyneriFamilyCynoglossidae (Tonguefishes)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length24.0Depth range20–70 m (66–230 ft)EnvironmentMarine; demersal; depth range 20 - 70 mClimateSubtropicalDistributionNorthwest Pacific: Korea and southern Japan to the Yellow Sea and South China Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (tmax=4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026