HomeFish encyclopediaRay-finned fishesPerch-like fishSleepersWidehead sleeper Widehead sleeper (Eleotris mauritiana) Scientific name: Eleotris mauritiana Bennett, 1832 The Widehead sleeper (Eleotris mauritiana) is a freshwater fish of the family Eleotridae. Native range: Africa, Mozambique to the Umtata River (Transkei, South Africa); also islands in the western Indian Ocean. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 7-9; Anal spines: 1; Anal soft rays: 8. Head and body dark brown to black, with longitudinal lines and irregular mottlings on body; fins dark.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEleotris mauritianaFamilyEleotridae (Sleepers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentMarine; freshwater; brackish; demersal; amphidromousClimateTropicalDistributionAfrica: Mozambique to the Umtata River (Transkei, South Africa); also islands in the western Indian Ocean.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