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); arapaima: Named for the pirarucu Arapaima gigas (Teleostei: Osteoglossomorpha), referring to the elongate and slightly depressed head, which it resembles. Noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的; pH range: 6.3 - 7.2. 亞熱帶的
South America: Mamirauá lake system, Lago Tefé, and terra firme swamps near the town of Tefé in Central Amazonia.
南美洲: Mamiraua 湖系統， Lago Tefe 與地 firme 在中央的亞馬遜河中的 Tefe 的城鎮的附近淹沒。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 55.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 41292); 最大体重: 450.00 g (Ref. 41292)
简单描述
检索表 | 型态特徵 | 形态测量图
Possess reverse counter shading (lighter on top) in which the dark bands are interrupted dorsally and the pale interband regions merge on the dorsum and in which the dorsum has a silver-blue sheen in life, and very large anterior nares (diameter about that of eye), associated with a large cleft in the anterolateral margin of the ethmoid region resulting in a square anterior margin of snout between the anterior nares. With deep body (body depth 11-13% TL versus 6-10): long head (head length 12.7-13.6% TL versus 8.8-12.6), and depressed head (head depth 53-57% TL versus 58-64) (Ref. 41292).
持有轮廓颠倒的阴影 (颜色淡的在顶端上) 在那一个深色条纹被中断背面，而且灰白的条纹间的区域在背面上合并与在那一个背面有一个银色-蓝色的光辉活着时，而且非常大的前鼻孔 (直径大约那眼), 在造成在前鼻孔之间的一个吻的方形前缘的筛骨区域的前外侧边缘中伴随着一个大的裂缝了。 有深的身体:(体高 11-13% TL 对 6-10) 长的头部 (头长 12.7-13.6% TL 对 8.8-12.6), 而且使头部 (头部深度 53-57% TL 对 58-64) 萧条.(参考文献 41292)
Facultative air-breathing in the genus (Ref. 126274); Juveniles commonly collected in várzea floating meadows, adults in várzea flooded forest but rarely caught in floating meadows where they are presumed to spawn.
稚鱼通常在 varzea 漂浮草地收集了, 成鱼在 varzea 但是很少被漂浮的草地捕获的泛滥了森林在哪里它们被推测产卵。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: Mamiraua 湖系統， Lago Tefe 與地 firme 在中央的亞馬遜河中的 Tefe 的城鎮的附近淹沒。
Albert, J.S. and W.G.R. Crampton, 2001. Five new species of Gymnotus (Teleostei: Gymnotiformes) from an upper Amazon floodplain, with descriptions of electric organ discharges and ecology. Ichthyol. Explor. Freshwat. 12(3):241-266. (Ref. 41292)
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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).
营养阶层 (Ref.
69278): 3.2 ±0.40 se; based on food items.
回复力 (Ref.
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): Moderate vulnerability (42 of 100).
