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Piaractus mesopotamicus (Holmberg, 1887)

Pacu
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Piaractus mesopotamicus
Picture by Lovshin, L.


Brazil country information

Common names: Caranha, Pacu, Pacu branco
Occurrence: native
Salinity: freshwater
Abundance: scarce (very unlikely) | Ref: Silvano, R.A.M. and A. Begossi, 2001
Importance: subsistence fisheries | Ref: Silvano, R.A.M. and A. Begossi, 2001
Aquaculture: commercial | Ref: Lovshin, L.L., 1995
Regulations: | Ref:
Uses: live export: yes;
Comments: Found in Piracicaba river (Ref. 50076). Widely farmed in Southern Brazil (Ref. 32894).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Lovshin, L.L., 1995
National Database:

Common names from other countries

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | 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 / depth range / distribution range 生态学

; 淡水 居于水底的; 河川洄游 (Ref. 51243).   亞熱帶的; 15°S - 38°S, 66°W - 42°W

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

South America: Paraguay-Paraná River basin.
南美洲: 巴拉圭- 巴拉納河的流域。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 40.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 39031); 最大体重: 20.0 kg (Ref. 32894)

简单描述 检索表 | 型态特徵 | 形态测量图

Dark grey to silver dorsally and laterally and white ventrally with a yellow breast.
深灰色的到银色的背面而且侧面地与腹侧白色的具有一个黄色的胸部。

生物学特性     字汇 (例如 epibenthic)

Invades the flooded forests to feed on nuts and seeds which fall from trees (Ref. 32894). Reaches around 50.0 cm SL (Ref. 81048).

侵入被水淹没的森林觅食坚果与从树掉下的种子。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

Assuming standard characid reproduction. Replace ASAP.南美洲: 巴拉圭- 巴拉納河的流域。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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)

世界自然保护联盟红皮书 (Ref. 130435)

  临近濒危 (NT) (A2bcde); Date assessed: 21 December 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

渔业: 商业性; 养殖: 商业性
FAO(Aquaculture systems: 产生; ; publication : search) | FishSource |

更多信息

Trophic ecology
食物相
Diet compositions
Food consumptions
Food rations
捕食者
Ecology
生态学
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
体长-频率
Mass conversions
Recruitments
Abundances
Life cycle
繁殖
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
仔鱼
稚鱼动力学
Distribution
国家
FAO区域
生态系
标本纪录
简介
BRUVS - Videos
Anatomy
Gill areas
脑重体重比
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
游泳类型
Swimming speeds
Visual pigment(s)
鱼的声音
Diseases / Parasites
Toxicities (LC50s)
Genetics
遗传学
Electrophoreses
Heritabilities
Human related
Aquaculture systems
水产养殖描述
品种
Ciguatera cases
Stamps, coins, misc.
Outreach
合作者
References
参考文献

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
营养阶层 (Ref. 69278):  2.0   ±0.00 se; based on food items.
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (39 of 100).
价格分类 (Ref. 80766):   Unknown.