Overview

Comprehensive Description

Biology

Omnivorous, feeding mainly on insects, crustaceans, mollusks, other invertebrates and some vegetable material (Ref. 6868).
  • Burgess, W.E. 1989 An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
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Distribution

South America: Paraná River basin.
  • Sabaj, M.H. and C.J. Ferraris Jr. 2003 Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
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Paraná River basin: Argentina, Bolivia, Brazil, Paraguay and Uruguay.
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Physical Description

Size

Max. size

70.0 cm TL (male/unsexed; (Ref. 37054)); max. published weight: 9,000 g (Ref. 6868)
  • Burgess, W.E. 1989 An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
  • Sabaj, M.H. and C.J. Ferraris Jr. 2003 Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
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Ecology

Habitat

Environment

demersal; freshwater
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Diseases and Parasites

Spinoxyuris Infestation. Parasitic infestations (protozoa, worms, etc.)
  • Moravec, F. 1998 Nematodes of freshwater fishes of the neotropical region. 464 p. Praha, Academy of Sciences of the Czech Republic. (Ref. 51153)
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Cystidicoloides Infection 3. Parasitic infestations (protozoa, worms, etc.)
  • Moravec, F. 1998 Nematodes of freshwater fishes of the neotropical region. 464 p. Praha, Academy of Sciences of the Czech Republic. (Ref. 51153)
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
  • Burgess, W.E. 1989 An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
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Wikipedia

Oxydoras kneri

Oxydoras kneri is a species of thorny catfish found in the Paraná River basin in Argentina, Bolivia, Brazil, Paraguay and Uruguay. This species grows to a length of 70.0 centimetres (27.6 in) TL and reaches a weight of 9.0 kilograms (20 lb). This species is caught commercially for human consumption. O. kneri is omnivorous, feeding mainly on insects, crustaceans, mollusks, other invertebrates and some vegetable material.

References

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