Common names from other countries
分類 / Names
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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.
Issue
See Géry (1986: 102) for more detail.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の; potamodromous (Ref. 51243). Subtropical; 15°S - 38°S, 66°W - 42°W
South America: Paraguay-Paraná River basin.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 40.5 cm SL オス/雌雄の選別がない; (Ref. 39031); 最大公表体重: 20.0 kg (Ref. 32894)
Dark grey to silver dorsally and laterally and white ventrally with a yellow breast.
Invades the flooded forests to feed on nuts and seeds which fall from trees (Ref. 32894). Reaches around 50.0 cm SL (Ref. 81048).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Assuming standard characid reproduction. Replace ASAP.
Lovshin, L.L., 1995. The colossomids. p. 153-159. In C.E. Nash and A.J. Novotny (eds.) World animal science: production of aquatic animals: fishes. Elsevier Science, Amsterdam, The Netherlands. (Ref. 32894)
CITES (Ref. 128078)
Not Evaluated
Human uses
水産業: 商業; 水産養殖: 商業
用具
特記事項
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インターネットの情報源
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=0.02455 (0.01070 - 0.05632), b=3.00 (2.80 - 3.20), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 2.0 ±0.00 se; based on food items.
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (39 of 100).
