Common names from other countries
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Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Colossomatinae
Etymology: Colossoma: Greek, kolos = short, truncated + Greek, soma = body (Ref. 45335).
More on author: Cuvier.
Issue
See Machado-Allison 1982: 42, Géry 1986: 97 and Machado-Allison 1986: 2 for detailed description. See Goulding & Carvalho 1982 and Araujo Lima & Goulding 1997 for general biology and management. See Loubens & Panfili 1997 for growth biology.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique; pH range: 5.0 - 7.8; dH range: ? - 20; potamodrome (Ref. 51243); profondeur 5 - ? m. Tropical; 22°C - 28°C (Ref. 1672); 15°S - 35°S
South America: Amazon and Orinoco basins as wild form; pisciculture form largely distributed in South America.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ?, range 24 - ? cm
Max length : 108 cm TL mâle / non sexé; (Ref. 40637); common length : 70.0 cm TL mâle / non sexé; (Ref. 9987); poids max. publié: 40.0 kg (Ref. 72380)
This species is usually solitary. Adults stay in flooded forests during first 5 months of flooding and consume but fruits and grains. Young and juveniles live in black waters of flood plains until their sexual maturity. Feeds on zooplankton, insects, snails and decaying plants (Ref. 32894). Used in aquaculture because it can live in mineral poor waters and is very resistant to diseases. Marketed fresh and frozen (Ref. 9987).
Géry, J., 1977. Characoids of the world. Neptune City ; Reigate : T.F.H. [etc.]; 672 p. : ill. (chiefly col.) ; 23 cm. (Ref. 598)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Menace pour l'homme
Traumatogenic
Utilisations par l'homme
Pêcheries: intérêt commercial mineur; Aquaculture: commercial; Aquarium: Aquariums publics
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02239 (0.01185 - 0.04230), b=2.99 (2.82 - 3.16), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Niveau trophique (Ref.
69278): 2.0 ±0.0 se; based on diet studies.
Résilience (Ref.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.23; Fec=7,000-300,000).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100).