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) >
Gymnotidae (Naked-back knifefishes)
裸背電鰻科 (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335).
More on author: Valenciennes.
Taxonomic Remarks
Sherborn & Griffin (1934) have noticed that the plates with the figure of the holotype of the nominal Carapus inaequilabiatus (i.e., the original description of that species) was actually published in 1839, while the text description was published some years later, in 1847. In the text description, the generic name appears as Carapeus (a misspelling; 1847:11). The type locality of Gymnotus inaequilabiatus has been sometimes cited elsewhere as "rio de La Plata" (e.g., Mago-Leccia, 1994:55).
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. 亞熱帶的
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Paraguay River basin (also probably in lower Paraná basin).
南美洲: 巴拉圭河流域.(也可能在 Parana 流域下游)
初熟時的長度 / 大小 / 重量 / 年齡
成熟度: Lm 18.2  range ? - ? cm
Max length : 99.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 118108)
Facultative air-breathing in the genus (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: 巴拉圭河流域.(也可能在 Parana 流域下游)
Campos-da-Paz, R., 2003. Gymnotidae (Naked-back knifefishes). p. 483-486. 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. 36692)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 13 August 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=0.00437 (0.00209 - 0.00911), b=2.98 (2.79 - 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): 3.5 ±0.5 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): High vulnerability (60 of 100).
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