分類 / Names
俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
環境 / 氣候 / 範圍
生態學
; 淡水 底中水層性. 24°C - 30°C (Ref. 1672), preferred ?
South America: Amazon River basin, Rupununi and Oyapock Rivers.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 90.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 50892); 最大體重: 6.0 kg (Ref. 72380)
Body covered with very big scales; dorsal and anal fins almost fused with the caudal fin; 2 barbels at the extremity of the lower jaw; adult silvery, juvenile with blue glints and a yellow-orange bar (Ref. 12225).
Is an omnivore with a tendency to feed on fish at the surface. The superior position of the mouth allows it to capture its prey while swimming from below. Also jumps out of the water to feed on large insects (Coleoptera; Ref. 27548). It is capable of adapting to environments with low oxygen levels (Ref. 12225).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
The male carries eggs, larvae and early juveniles (alevinos) in his mouth (Ref. 1672), which lasts for nearly six weeks (Ref. 102836).
Ferraris, C.J. Jr., 2003. Osteoglossidae (Arowanas). p. 30. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 50892)
CITES (Ref. 94142)
Not Evaluated
人類使用
漁業: 商業性; 游釣魚種: 是的; 水族館: 商業性
工具
特別的報告
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.7656 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00140 - 0.00941), b=3.13 (2.91 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.48 se; Based on food items.
瀕危性 (Ref.
59153): Moderate vulnerability (39 of 100) .
