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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). Body shape (shape guide): elongated; Cross section: oval. 身體覆蓋著非常大的鱗片; 背鰭與臀鰭幾乎與尾鰭連結了; 在下面頜的末端的 2個觸鬚; 成魚銀色的, 稚魚有藍色光芒與一條橘黃色的橫帶.(參考文獻 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).
The male carries eggs, larvae and early juveniles (alevinos) in his mouth (Ref. 1672), which lasts for nearly six weeks (Ref. 102836).南美洲: 亞馬遜河流域， Rupununi 與 Oyapock 河。
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)
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.7656 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00227 - 0.00767), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
營養階層 (參考文獻 69278): 3.4 ±0.48 se; based on food items.
回復力 (參考文獻 120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref. 59153): Low to moderate vulnerability (31 of 100). 🛈
