HomeFish encyclopediaRay-finned fishesKnifefishesGhost knifefishesRosen?s tube-snouted ghost knifefish Rosen?s tube-snouted ghost knifefish (Sternarchorhynchus roseni) Scientific name: Sternarchorhynchus roseni Mago-Leccia, 1994 The Rosen?s tube-snouted ghost knifefish (Sternarchorhynchus roseni) is a freshwater fish of the family Apteronotidae. Native range: South America, Orinoco and Amazon River basins. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 0; Anal soft rays: 187 - 215; Vertebrae: 82 - 84Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSternarchorhynchus roseniFamilyApteronotidae (Ghost knifefishes)OrderGymnotiformes (Knifefishes)ClassActinopterygii (Ray-finned fishes)Maximum length41.7EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Orinoco and Amazon River basins.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