分類 / Names
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Gymnotiformes (Knifefishes) >
Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); ucamara: Named for the geological term 'Ucamara Depression' describing the low-lying region between the lower reaches of the Ucayali and Marañon Rivers caused by subsidence in the upper Amazon foreland basin (Ref. 49730).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: known only from the lowland Rio Ucayali basin in Peru.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 19.0 cm TL オス/雌雄の選別がない; (Ref. 49730)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 0; 臀鰭: 220 - 245. Color pattern with 18-24 dark brown bands separated by narrow pale interbands which are less than one-third the width of the dark bands (Ref. 49730).
Facultative air-breathing in the genus (Ref. 126274); Collected from static, vegetation-choked shallow water (Ref. 49730). Feeds on aquatic invertebrates (Ref. 49730).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Crampton, W.G.R., N.R. Lovejoy and J.S. Albert, 2003. Gymnotus ucamara: a new species of neotropical electric fish from the Peruvian Amazon (Ostariophysi: Gymnotidae), with notes on ecology and electric organ discharges. Zootaxa 277:1-18. (Ref. 49730)
Human uses
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特記事項
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インターネットの情報源
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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.4 ±0.43 se; based on food items.
回復力 (Ref.
120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).