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Oxydoras niger (Valenciennes, 1821)

Ripsaw catfish
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Oxydoras niger
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分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Doradidae (Thorny catfishes) > Doradinae
Etymology: Oxydoras: Greek, oxys = sharp + Greek, dora = skin (Ref. 45335).
More on author: Valenciennes.

Issue
Occurrence in Orinoco basin tentative, dependent upon identification of questionable synonym Oxydoras holdeni Fernández-Yépez; specimens of Oxydoras niger reported from Venezuela by Fernández-Yépez 1968:57 pertain to Oxydoras sifontesi Fernández-Yépez. Species-level distinctiveness of São Francisco and Amazonas Oxydoras not investigated.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の; pH range: 6.0 - 7.8; dH range: ? - 25. Tropical; 21°C - 24°C (Ref. 2060)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

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

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 62.5  range ? - ? cm
Max length : 100.0 cm SL オス/雌雄の選別がない; (Ref. 37054); common length : 59.0 cm SL オス/雌雄の選別がない; (Ref. 9081); 最大公表体重: 11.0 kg (Ref. 40637); 最大公表体重: 11.0 kg

生物学     用語集 (例 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.

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター : Ferraris, Jr., Carl J. | 協力者

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)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 02 December 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 少数商業の; 水族館・水槽: 商業
FAO - Publication: search | FishSource |

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インターネットの情報源

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00680 - 0.01852), b=3.07 (2.93 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  2.8   ±0.29 se; based on food items.
回復力 (Ref. 120179):  低い, ４．５年～１４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (73 of 100).
価格帯 (Ref. 80766):   Unknown.