HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersCocos Island flounder Cocos Island flounder (Asterorhombus cocosensis) Scientific name: Asterorhombus cocosensis Bleeker, 1855 The Cocos Island flounder (Asterorhombus cocosensis) is a marine fish of the family Bothidae. Native range: Indo-West Pacific, Mozambique to Fiji; north to Japan, south to Queensland, Australia (not occurring nonmarginally on the Pacific Plate). BiologyLength of upper jaw 2.4 to 3.1 times in head length (Ref 42535).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAsterorhombus cocosensisFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range1–30 m (3–98 ft)EnvironmentMarine; demersal; depth range 1 - 30 mClimateTropicalDistributionIndo-West Pacific: Mozambique to Fiji; north to Japan, south to Queensland, Australia (not occurring nonmarginally on the Pacific Plate).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