HomeFish encyclopediaRay-finned fishesFlatfishesLarge-tooth floundersFive-eyed flounder Five-eyed flounder (Pseudorhombus quinquocellatus) Scientific name: Pseudorhombus quinquocellatus Weber & de Beaufort, 1929 The Five-eyed flounder (Pseudorhombus quinquocellatus) is a marine fish of the family Paralichthyidae. Native range: Western Pacific, Taiwan and the South China Sea to Australia (Darwin to North West Cape). BiologyDorsal spines (total): 0; Dorsal soft rays (total): 68-72; Anal spines: 0; Anal soft rays: 52 - 55; Vertebrae: 33 - 35. Body uniformly brownish, 2 ocelli above and below lateral line and 1 ocellus on posterior third of straight section of lateral line. Many indistinct rings scattered on body and median fins. Teeth in upper jaw small and close-set with3 or 4 pairs of canines anteriorly, teeth in lower jaw stronger and more widely spaced than those in upper jaw. Gill rakers pointed and rather short. Pectoral fin on ocular side with 12-13 rays (Ref 9774).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudorhombus quinquocellatusFamilyParalichthyidae (Large-tooth flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length12.5EnvironmentMarine; demersalClimateTropicalDistributionWestern Pacific: Taiwan and the South China Sea to Australia (Darwin to North West Cape).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