HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersDeep flounder Deep flounder (Pseudorhombus elevatus) Scientific name: Pseudorhombus elevatus Ogilby, 1912 The Deep flounder (Pseudorhombus elevatus) is a marine fish of the family Paralichthyidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 67-74; Anal spines: 0; Anal soft rays: 52 - 66. Eyed side with dark rings arranged in about 5 longitudinal rows; dark blotch at junction of straight and curved parts of lateral line and 2 smaller ones on the lateral line at posterior part of body and anterior end of caudal peduncle; small dark spots and elongate markings on median fins; pectoral fins with 10-12 rays on eyed side, 10-11 rays on blind side.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudorhombus elevatusFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length15.0Depth range7–200 m (23–656 ft)EnvironmentMarine; demersal; depth range 7 - 200 mClimateTropicalDistributionIndian Ocean: throughout the region including the Red Sea and Persian Gulf; south to Algoa Bay in South Africa. Western Pacific: Taiwan southward to New Guinea and extending to the northeastern coast of Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceHigh, 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