HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersElongate flounder Elongate flounder (Ammotretis elongatus) Scientific name: Ammotretis elongatus McCulloch, 1914 The Elongate flounder (Ammotretis elongatus) is a marine fish of the family Pleuronectidae. Native range: Eastern Indian Ocean, southern Australia, from southern Western Australia to South Australia and Tasmania. BiologyDorsal soft rays (total): 74-75; Anal soft rays: 50 - 51. Body moderately deep (40-43% SL). Snout extended into a hook-like process projecting downwards in front of small, oblique mouth. Scales very small, rather firmly attached; ctenoid or cycloid on ocular side, mostly ctenoid on blind side. Pelvic fin rays on right side 12-14, left 3-4. Caudal fin rays 14.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAmmotretis elongatusFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length22.0EnvironmentMarine; demersalClimateTemperateDistributionEastern Indian Ocean: southern Australia, from southern Western Australia to South Australia and Tasmania.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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