HomeFish encyclopediaRay-finned fishesCatfishArmored catfishesDusky panaque Dusky panaque (Panaqolus nocturnus) Scientific name: Panaqolus nocturnus Schaefer & Stewart, 1993 Photo: https://www.planetcatfish.com/common/image.php?species=panaqolus_nocturnus&image_id=424 The Dusky panaque (Panaqolus nocturnus) is a freshwater fish of the family Loricariidae. Native range: South America, Santiago and Pastaza River basins in upper Napo drainage. Species factsScientific namePanaqolus nocturnusFamilyLoricariidae (Armored catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length13.9EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Santiago and Pastaza River basins in upper Napo drainage.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