分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes) >
Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335).
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
; 淡水 底中水层性. 熱帶; 22°C - 30°C (Ref. 13614)
South America: Amazon and Orinoco River basins, and related areas in northern South America.
南美洲: 亞馬遜河與奧里諾科河河流域, 而且相關了在南美洲北部的區域。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 30.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 12225)
Facultative air-breathing in the genus (Ref. 126274); Occurs in swamps and creeks with moderate water flow and where the bottom is covered with vegetation or plant debris. Feeds on aquatic invertebrates, insect larvae and crustaceans. Relatively aggressive, it lives in small groups (Ref. 12225).
出现于中等的水水流的沼泽与小溪与底部被覆盖着植物或植物残枝的地方。 吃水生无脊椎动物，昆虫幼生与甲壳动物。 相当侵略性，它生活在小群鱼群中。 (参考文献 12225)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 亞馬遜河與奧里諾科河河流域, 而且相關了在南美洲北部的區域。
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
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Estimates based on models
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00204 - 0.00890), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.4 ±0.42 se; based on food items.
回复力 (参考文献
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (27 of 100).
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