Oxydoras

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Siluriformes

Familia: Doradidae
Genus: Oxydoras

Species: O. kneri – O. niger – O. sifontesi
Name

Oxydoras Kner, 1855
References

Carl J. Ferraris, Jr. 2007. Zootaxa 1418: 1–628 (PDF)

Oxydoras is a genus of thorny catfishes native to tropical South America.
Species

There are currently three recognized species in this genus:[1]

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 9 kilograms (20 lb). O. niger gets even heavier, with a maximum published weight of 13 kilograms (29 lb).[1]
References

Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Oxydoras in FishBase. December 2011 version.