DistributionRead full entry
The fish is found throughout South America (Sands, 1997), from the East coast to the base of the Andes: 3,000 feet above sea level (Burgess, 1989). Although no reports were found offering evidence of Oxydoras niger outside of the Amazon River system, Burgess (1989) states that the doradids' range includes the Orinoco and the Parana systems as well. Therefore, it is possible that this fish also exists there.
Biogeographic Regions: neotropical (Native )