分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Sternopygidae (Glass knifefishes)
胸肛魚科 (Glass knifefishes) > Eigenmanninae
Etymology: Distocyclus: Greek, distokylos = that has two circles (Ref. 45335).
More on authors: Eigenmann & Allen.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性, usually 4 - 28 m (Ref. 96854). 熱帶
South America: Amazon, Essequibo and Orinoco river basin.
南美洲: 亞馬遜河。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 50.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 39524)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
臀鰭軟條: 209 - 273. Distocyclus conirostris is distinguished by the combination of the following characters: conical snout; small nasal capsule with the internarial distance equivalent to the diameter of the posterior nostril; endopterygoid without teeth; single tooth row limited to the anterior portion of the dentary; eye covered by skin; teeth completely attached to the ventral surface of the premaxilla; flat surface to the upper lip; anterior margin of the premaxilla in contact with the posterior margin of the upper lip; terminal mouth; one to six teeth on the dentary; absence of teeth associated with the oral valve; half-moon shaped branchiostegal rays; body without eight dark, vertical bands; anal fin with 209-273 rays; scales present on the anterior portion of the dorsal region of the body; tiny, fleshy gill rakers; presence of branched anal-fin rays; 13 or 14 precaudal vertebrae; and scapular foramen present (Ref. 96854).
Body shape (shape guide): elongated.
Usually occurs in floodplain and main river channels at depths of 3.8-28.3 m (Ref. 96854).
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: 亞馬遜河。
Dutra, G.M., C.D. de Santana, R.P. Vari and W.B. Wosiacki, 2014. The south American electric glass knifefish genus Distocyclus (Gymnotiformes: Sternopygidae): redefinition and revision. Copeia 2014(2):345-354. (Ref. 96854)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 02 December 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) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00355 (0.00161 - 0.00782), b=2.97 (2.77 - 3.17), 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) |
3.1 ±0.3 se; based on size and trophs of closest relatives |
釣魚的脆弱性 (Ref. 59153) |
Low to moderate vulnerability (26 of 100). 🛈 |