分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Bagridae (Bagrid catfishes)
鱨科 (Bagrid catfishes)
Etymology: Olyra: Greek, olyra = a kind of grain (Ref. 45335).
Eponymy: Dr Robert Collett (1842–1913) was a Norwegian zoologist and ichthyologist. [...] (Ref. 128868), visit book page.
More on author: Steindachner.
Taxonomic Remarks
After Bockmann & de Pinna (2004: Ref. 55745), possibly a synonym of Olyra longicaudata McClelland, 1842. The validity of species remains to be demonstrated.
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. 溫帶
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Asia.
南美洲: 可能阿根廷的拉布拉塔河。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 5.8 cm SL 雄魚/尚未辨別雌雄; (Ref. 55745)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Distinguished by having the following characters: posterior nares with nasal barbels (shared with various Old-World catfish taxa); anus and urogenital openings widely separated (shared with a large subgroup of Bagridae); first lateral line ossicle with well-defined processes articulating with supracleithrum (shared with species of Olyra) (Ref. 55745).
Formerly wrongly attributed to the South-American fauna. This species clearly belongs to South Asia. It is possible that accidental mixing of specimens and or labels resulted in the assignment of this species to a Neotropical location (Ref. 55745).
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: 可能阿根廷的拉布拉塔河。
Bockmann, F.A. and M.C.C. de Pinna, 2004. Heptapterus collettii Steindachner, 1881: a member of the Asian bagrid genus Olyra erroneously assigned to the Neotropical fauna (Siluriformes: Ostariophysi). Copeia 2004(3):665-675. (Ref. 55745)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
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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) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00871 (0.00415 - 0.01826), b=2.93 (2.76 - 3.10), 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) |
3.2 ±0.1 se; based on size and trophs of closest relatives |
釣魚的脆弱性 (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |