分類 / Names
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).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 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 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 30.0 cm SL 雄魚/尚未辨別雌雄; (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).
出現於中等的水水流的沼澤與小溪與底部被覆蓋著植物或植物殘枝的地方。 吃水生無脊椎動物，昆蟲幼生與甲殼動物。 相當侵略性，它生活在小群魚群中。 (參考文獻 12225)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
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)
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Estimates based on models
Phylogenetic diversity index (Ref.
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 (Ref.
69278): 3.4 ±0.42 se; based on food items.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (27 of 100).
