HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersPennant flounder Pennant flounder (Grammatobothus pennatus) Scientific name: Grammatobothus pennatus Ogilby, 1913 The Pennant flounder (Grammatobothus pennatus) is a marine fish of the family Bothidae. Native range: Western Pacific, eastern Queensland and northwestern Australia, and Papua New Guinea. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 88-91; Anal spines: 0; Anal soft rays: 72 - 76. Maximum total length 18 cm (Ref 42535).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGrammatobothus pennatusFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length18.0Depth range35–60 m (115–197 ft)EnvironmentMarine; demersal; depth range 35 - 60 mClimateTropicalDistributionWestern Pacific: eastern Queensland and northwestern Australia, and Papua New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, 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