分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
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 / 深度上下限 / distribution range
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243). 亞熱帶的; 15°S - 38°S, 66°W - 42°W
South America: Paraguay-Paraná River basin.
南美洲: 巴拉圭- 巴拉納河的流域。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 40.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 39031); 最大體重: 20.0 kg (Ref. 32894)
Dark grey to silver dorsally and laterally and white ventrally with a yellow breast.
Body shape (shape guide): short and / or deep.
深灰色的到銀色的背面而且側面地與腹側白色的具有一個黃色的胸部。
Invades the flooded forests to feed on nuts and seeds which fall from trees (Ref. 32894). Reaches around 50.0 cm SL (Ref. 81048).
侵入被水淹沒的森林覓食堅果與從樹掉下的種子。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Assuming standard characid reproduction. Replace ASAP.南美洲: 巴拉圭- 巴拉納河的流域。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
近危 (NT) (A2bcde); Date assessed: 21 December 2020
人類使用
漁業: 商業性; 養殖: 商業性; 游釣魚種: 是的
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.6250 [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).
營養階層 (參考文獻
69278): 2.0 ±0.00 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (39 of 100).
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Nutrients (Ref.
124155): Calcium = 76.1 [25.1, 186.6] mg/100g; Iron = 1.76 [0.87, 4.38] mg/100g; Protein = 18.7 [16.6, 21.0] %; Omega3 = 0.522 [0.209, 1.343] g/100g; Selenium = 42.4 [16.5, 105.7] μg/100g; VitaminA = 8.7 [2.3, 31.5] μg/100g; Zinc = 1.13 [0.75, 1.83] mg/100g (wet weight);
