Taxonomic Remarks
No recent work; see Eigenmann & Eigenmann (1889:105) for description and key of identification; Géry (1977: 103) for description in key.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce pélagique; pH range: 5.6 - 7.8; dH range: ? - 30. Subtropical; 23°C - 27°C (Ref. 1672)
Central and South America: São Francisco, Amazon, Paraná, Orinoco and Magdalena River basins, and coastal rivers in Guyana, Suriname and French Guiana.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 16.5  range ? - ? cm
Max length : 28.5 cm SL mâle / non sexé; (Ref. 121647); poids max. publié: 520.00 g (Ref. 121647)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Opercular ocellus present.
Body shape (shape guide): elongated.
Obligate air-breathing (Ref. 126274); Inhabits swamps and creeks with little current (Ref. 12225), as well as in flooded savannas (Ref. 27188). Regularly goes to the surface of the water to breathe. Can survive long periods out of the water. This behavior of breathing air at the surface makes the fish vulnerable to predation by electric eels (Ref. 27188). Is a predaceous omnivore of open waters. Feeds on aquatic invertebrates and to lesser degree, on fish. Specimens measuring 16 cm were found to be mature (Ref. 12225).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Oyakawa, O.T., 2003. Erythrinidae (Trahiras). p. 238-240. 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. 37025)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; Aquarium: Aquariums publics
Outils
Articles particuliers
Télécharger en XML
Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00640 - 0.01636), b=3.13 (2.99 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Réf.
69278): 3.4 ±0.49 se; based on food items.
Résilience (Réf.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (25 of 100).
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