分類 / 名稱
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Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Callichthyidae (Callichthyid armored catfishes)
美鯰科 (Callichthyid armored catfishes) > Corydoradinae
Etymology: tukano: Named after the Tukano, an Amerindian group from the upper rio Negro and Japurá/Caquetá basin in Brazil, Colombia and Venezuela.
Eponymy: This genus and species are named after the Tucano Indians of the upper Rio Negro and Rio Uaupés area of Amazonas, Brazil. (Ref. 128868), visit book page.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的. 熱帶
South America: Rio Tiquié and its tributaries in the upper rio Negro Basin, Brazil.
南美洲: 在尼格羅河上游流域巴西中的 Rio Tiquie 與它的支流。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 4.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 51470)
背棘 (總數) : 1; 背的軟條 (總數) : 7; 臀鰭軟條: 7. Distinguished from all its congeners, except Corydoras reynoldsi and C. weitzmani, by its color pattern consisting of three large, dark blotches, the first one "mask" on the head, across the eye, the second one on the trunk at the level of the dorsal fin, and the third one on the trunk at the level of the adipose fin. Differs further from C. reynoldsi mainly by the development of trunk blotches; and from C. weitzmani by the presence of a dusky saddle between the dorsal and adipose fin, the second trunk blotch extending vertically from the adipose-fin base to the anal-fin base, and the presence of four dark, vertical stripes in the caudal fin (Ref. 51470).
Body shape (shape guide): fusiform / normal.
除了 Corydoras reynoldsi 與 C. weitzmani 以外，與它所有的同類區分了, 用它的彩色斑紋包含三大的, 黑色斑塊, 第一個在頭部上的 " 面具 ", 越過眼, 在背鰭的水平的軀幹上的第二個, 與在脂鰭的水平的軀幹上的第三個。 主要地進一步不同於 C. reynoldsi 藉由軀幹斑塊的發展; 而且從 C. weitzmani 藉由有一個暗色的鞍狀斑在背部與脂鰭，第二個軀幹斑塊垂直地延伸從脂鰭基底到臀鰭基底之間, 與那在尾鰭中有四條深色又垂直的斑紋.(參考文獻 51470)
描述: 背鰭鰭條 I,7; 臀鰭棘條 ii,5; 胸鰭鰭條 I,8 或 I,7; 腹鰭鰭條 i,5.(參考文獻 51470)
Facultative air-breathing (Ref. 126274)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在尼格羅河上游流域巴西中的 Rio Tiquie 與它的支流。
Britto, M.R. and F.C.T. Lima, 2003. Corydoras tukano, a new species of corydoradine catfish from the rio Tiquié, upper rio Negro basin, Brazil (Ostariophysi: Siluriformes: Callichthyidae). Neotrop. Ichthyol. 1(2):83-91. (Ref. 51470)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 16 October 2020
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01778 (0.00758 - 0.04173), b=3.02 (2.82 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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