HomeFish encyclopediaRay-finned fishesPerch-like fishSleepersPygmy sleeper Pygmy sleeper (Hemieleotris latifasciata) Scientific name: Hemieleotris latifasciata Meek & Hildebrand, 1912 The Pygmy sleeper (Hemieleotris latifasciata) is a freshwater fish of the family Eleotridae. In the aquarium it needs water at 25–30°C (77–86°F). Native range: Central and South America, San Juan del Sur, Nicaragua to southern Colombia on the Pacific drainage. Pygmy sleeper care at a glanceTemperature25–30°C (77–86°F) BiologyBody with a black band along the body; back greenish brown, sides yellowish and belly pearl white. A band bordered above and below by iridescent greenish yellow stripes present from the tip of the snout to the middle of the tail. Dorsal fin with some dark spots near the base; caudal fin transparent except fo the lateral band extending onto the middle rays; paired fins and anal fin transparent. Both adults and juveniles have the same coloration.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHemieleotris latifasciataFamilyEleotridae (Sleepers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.0EnvironmentFreshwater; pelagicClimateTropicalDistributionCentral and South America: San Juan del Sur, Nicaragua to southern Colombia on the Pacific drainage.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