Oxydoras niger  (Valenciennes, 1821)

Ripsaw catfish
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Oxydoras niger
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Doradidae (Thorny catfishes)
Etymology: Oxydoras: Greek, oxys = sharp + Greek, dora = skin (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal; pH range: 6.0 - 7.8; dH range: ? - 25.   Tropical; 21°C - 24°C (Ref. 2060)

Length at first maturity / Size / Weight / Age

Maturity: Lm 62.5  range ? - ? cm
Max length : 100.0 cm SL male/unsexed; (Ref. 37054); common length : 59.0 cm SL male/unsexed; (Ref. 9081); max. published weight: 11.0 kg (Ref. 40637); max. published weight: 11.0 kg

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

South America: Amazon, São Francisco and Essequibo River basins. Possibly in the Orinoco River basin.

Biology     Glossary (e.g. epibenthic)

Occurs over mud in streams and lakes. Forms schools (Ref. 9084). Feeds on detritus, chironomid and ephemeropteran larvae, and crustaceans (Ref. 9096). Known from temperatures ranging from 24-29.8 °C, pH range of 5-9, and an alkalinity range of 42-142.

Main reference Upload your references | References | Coordinator : Ferraris, Jr., Carl J. | Collaborators

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.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  2.8   ±0.29 se; Based on food items.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  High vulnerability (63 of 100) .
Price category (Ref. 80766):   Unknown.