Omgeving / Klimaat / Range
Ecologie
; zoetwater benthopelagisch. Tropical; 24°C - 30°C (Ref. 1672), preferred ?
South America: Amazon River basin, Rupununi and Oyapock Rivers.
Size / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 90.0 cm TL mannelijk/geslacht niet bekend; (Ref. 50892); Maximaal gepubliceerd gewicht: 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
Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Gevaarlijk voor mensen
Harmless
Gebruik door de mens
Visserij: commercieel; vis voor de hengelsport: ja; Aquarium: Commercieel
Tools
Speciale rapporten
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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).
Trophic Level (Ref.
69278): 3.4 ±0.48 se; Based on food items.
Weerstandsvermogen (Ref.
69278): .
Kwetsbaarheid (Ref.
59153): Moderate vulnerability (39 of 100) .
