HomeFish encyclopediaRay-finned fishesCatfishBumblebee catfishes, dwarf marbled catfishesDwarf marbled catfish Dwarf marbled catfish (Microglanis poecilus) Scientific name: Microglanis poecilus Eigenmann, 1912 The Dwarf marbled catfish (Microglanis poecilus) is a freshwater fish of the family Pseudopimelodidae. Native range: South America, Essequibo River basin in Guyana and French Guiana; and Suriname. BiologyOccurs in creeks with little current; living on the bottom covered with decomposing leaves.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicroglanis poecilusFamilyPseudopimelodidae (Bumblebee catfishes, dwarf marbled catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length6.9EnvironmentFreshwater; demersalClimateTropicalDistributionSouth America: Essequibo River basin in Guyana and French Guiana; and Suriname.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026