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Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Colossomatinae
Etymology: Piaractus: Greek, piar = fat, the side with grease of a body + Greek, aktos , ago = to carry.
More on author: Cuvier.
Issue
See Loubens & Panfili (2001:51) for growth biology.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce pélagique; pH range: 4.8 - 6.8; dH range: ? - 15. Tropical; 23°C - 28°C (Ref. 2060); 23°N - 11°S
South America: Amazon and Orinoco River basins (Ref. 39031). Reported from Argentina (Ref. 9086).
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ?, range 52 - ? cm
Max length : 88.0 cm TL mâle / non sexé; (Ref. 40637); poids max. publié: 25.0 kg (Ref. 2060); âge max. reporté: 28 années (Ref. 39139)
Juveniles mimic Serrasalmus nattereri. Feeds on insects and decaying plants (Ref. 32894). Possesses powerful dentition that can cause serious bites (Ref. 4537). An important foodfish (Ref. 12202).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Assuming standard charicid mode of reproduction. Replace ASAP.
Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Traumatogenic
Utilisations par l'homme
Pêcheries: intérêt commercial mineur; Aquaculture: commercial; Aquarium: Commercial
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03162 (0.02336 - 0.04281), b=2.99 (2.90 - 3.08), in cm total length, based on LWR estimates for this species (Ref.
93245).
Niveau trophique (Ref.
69278): 2.5 ±0.22 se; based on food items.
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (tm=7; tmax=28).
Fishing Vulnerability (Ref.
59153): High vulnerability (55 of 100).
Nutrients (Ref.
124155): Calcium = 51 [19, 129] mg/100g; Iron = 1.42 [0.63, 3.27] mg/100g; Protein = 18.3 [16.2, 20.6] %; Omega3 = 0.314 [0.107, 0.926] g/100g; Selenium = 79 [26, 194] μg/100g; VitaminA = 17.7 [4.5, 71.6] μg/100g; Zinc = 1.59 [1.02, 2.56] mg/100g (wet weight);