Classification / Names
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Actinoptérygiens (poissons à nageoires rayonnées) >
Osteoglossiformes (Bony tongues) >
Osteoglossidae (Arowanas)
Etymology: Osteoglossum: Greek, osteon = bone + Greek, glossa = tongue (Ref. 45335).
Environnement / Climat / Gamme
Écologie
; eau douce benthopélagique. Tropical; 24°C - 30°C (Ref. 1672), preferred ?
South America: Amazon River basin, Rupununi and Oyapock Rivers.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL mâle / non sexé; (Ref. 50892); poids max. publié: 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
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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)
Statut dans la liste rouge de l'IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; pêche sportive: oui; Aquarium: Commercial
Outils
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Sources Internet
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).
Niveau trophique (Ref.
69278): 3.4 ±0.48 se; Based on food items.
Résilience (Ref.
69278): .
Vulnérabilité (Ref.
59153): Moderate vulnerability (39 of 100) .