HomeFish encyclopediaRay-finned fishesFlatfishesRighteye floundersSmall-mouth righteye flounder Small-mouth righteye flounder (Nematops microstoma) Scientific name: Nematops microstoma G?nther, 1880 The Small-mouth righteye flounder (Nematops microstoma) is a marine fish of the family Pleuronectidae. Native range: Southwest Pacific, known only from Nares Harbor, Admiralty Islands. BiologyBody depth about 2.3 times in SL. Pectoral fin on eyed side shorter than head. Caudal-fin rays 22 (Ref 12933).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNematops microstomaFamilyPleuronectidae (Righteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length10.0EnvironmentMarine; demersalClimateTropicalDistributionSouthwest Pacific: known only from Nares Harbor, Admiralty Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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