HomeFish encyclopediaRay-finned fishesFlatfishesCrested floundersTongue flatfish Tongue flatfish (Plagiopsetta glossa) Scientific name: Plagiopsetta glossa Franz, 1910 The Tongue flatfish (Plagiopsetta glossa) is a marine fish of the family Samaridae. Native range: Western Pacific, Japan and Taiwan to New South Wales, Australia. BiologyDorsal soft rays: 66-72; Anal soft rays: 51 - 57. Feebly pigmented snout, presence of supratemporal branch on lateral line of ocular side and medial dark pigmented spot on mandible and intermandibular area.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlagiopsetta glossaFamilySamaridae (Crested flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length19.0Depth range65–278 m (213–912 ft)EnvironmentMarine; demersal; depth range 65 - 278 mClimateTropicalDistributionWestern Pacific: Japan and Taiwan to New South Wales, Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026