HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersPeacock flounder Peacock flounder (Pseudorhombus argus) Scientific name: Pseudorhombus argus Weber, 1913 The Peacock flounder (Pseudorhombus argus) is a marine fish of the family Paralichthyidae. Native range: Indo-West Pacific, Indo-Australian Archipelago. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 67-72; Anal spines: 0; Anal soft rays: 51 - 55. Body brownish, 2 double or tripe ocelli above and below lateral line and 1 on posterior third of straight section of lateral line. Many dark spots and rings scattered on body and median fins. Pectoral fin on ocular side with 12-13 rays. Pelvic fins short based, subequal and sub symmetrical in position, posterior 3-4 rays branched.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudorhombus argusFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Common length17.5Depth range13–78 m (43–256 ft)EnvironmentMarine; demersal; depth range 13 - 78 m, usually 15 - 25 mClimateTropicalDistributionIndo-West Pacific: Indo-Australian Archipelago.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, 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