Oxydoras is a genus of thorny catfishes native to tropical South America.
Species There are currently three recognized species in this genus: Oxydoras kneri Bleeker, 1862 Oxydoras niger (Valenciennes, 1821) (Ripsaw catfish) Oxydoras sifontesi Fernández-Yépez, 1968
Description Oxydoras species are relatively large, reaching between 70–100 centimetres (28–40 in) in length. O. kneri has a maximum published weight of . O. niger gets even heavier, with a maximum published weight of .
References