HomeFish encyclopediaRay-finned fishesPerch-like fishSleepersPoreless gudgeon Poreless gudgeon (Oxyeleotris nullipora) Scientific name: Oxyeleotris nullipora Roberts, 1978 The Poreless gudgeon (Oxyeleotris nullipora) is a freshwater fish of the family Eleotridae. Native range: Oceania, Australia and central southern New Guinea. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 10-11; Anal spines: 1; Anal soft rays: 7 - 10Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOxyeleotris nulliporaFamilyEleotridae (Sleepers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.0EnvironmentFreshwater; demersalClimateTropicalDistributionOceania: Australia and central southern New Guinea.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