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Gymnotus arapaima  Albert & Crampton, 2001

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Gymnotus arapaima
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drawing shows typical fish in this Family.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 辐鳍鱼纲 (条鳍鱼) > Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes)
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.

环境 / 气候 / 范围 生态学

; 淡水 居于水底的; pH range: 6.3 - 7.2.    , preferred ?

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South America: Mamirauá lake system, Lago Tefé, and terra firme swamps near the town of Tefé in Central Amazonia.

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 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).

生物学特性     字汇 (例如 epibenthic)

Juveniles commonly collected in várzea floating meadows, adults in várzea flooded forest but rarely caught in floating meadows where they are presumed to spawn.

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 : Campos-da-Paz, Ricardo | 合作者

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)

世界自然保护联盟红皮书 (Ref. 115185)

  不评价 

CITES (Ref. 94142)

Not Evaluated

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