Common names from other countries
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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 / rango de profundidad / distribution range
Ecología
; agua dulce pelágico; 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 / Tamaño / Peso / Age
Madurez: Lm ?, range 52 - ? cm
Max length : 88.0 cm TL macho / no sexado; (Ref. 40637); peso máximo publicado: 25.0 kg (Ref. 2060); edad máxima reportada: 28 años (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
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
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)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Traumatogenic
Human uses
Pesquerías: escaso valor comercial; Acuicultura: comercial; pesca deportiva: si; Acuario: Comercial
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03090 (0.02263 - 0.04219), b=3.00 (2.91 - 3.09), in cm total length, based on LWR estimates for this species (Ref.
93245).
Nivel trófico (Referencia
69278): 2.5 ±0.22 se; based on food items.
Resiliencia (Referencia
120179): Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (tm=7; tmax=28).
Fishing Vulnerability (Ref.
59153): High vulnerability (55 of 100).
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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);