HomeFish encyclopediaRay-finned fishesKnifefishesBluntnose knifefishesBarred knifefish Barred knifefish (Steatogenys elegans) Scientific name: Steatogenys elegans Steindachner, 1880 The Barred knifefish (Steatogenys elegans) is a freshwater fish of the family Hypopomidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: South America, Guianas and the Amazon River basin. Barred knifefish care at a glanceTemperature22–26°C (72–79°F) Species factsScientific nameSteatogenys elegansFamilyHypopomidae (Bluntnose knifefishes)OrderGymnotiformes (Knifefishes)ClassActinopterygii (Ray-finned fishes)Maximum length29.4EnvironmentFreshwater;; pH range: 6.0 - 6.5; dH range: ? - 12 benthopelagicClimateTropicalDistributionSouth America: Guianas and the Amazon River basin.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026