分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Serrasalminae
Etymology: Pygopristis: Greek, pyge = rump + Greek, pristis = saw (Ref. 45335).
More on author: Cuvier.
Taxonomic Remarks
See Géry (1972:209), Jégu & Santos (1988a:242) and Machado-Allison & Fink (1996:13) for detailed morphology. See Machado-Allison & Fink (1996:14) for distribution in Venezuela.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 底中水层性. 熱帶
South America: Orinoco River basin, north and eastern Guiana Shield rivers; tributaries of the lower Amazon River.
南美洲: 奧里諾科河河流域, 北方與東方的圭亞那遮蔽河; 亞馬遜河下游的支流。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 21.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 111697)
Rare (Ref. 12225). Possesses powerful dentition that can cause serious bites.
稀有的.(参考文献 12225) 持有能引起严重的咬的有力的牙齿。
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: 奧里諾科河河流域, 北方與東方的圭亞那遮蔽河; 亞馬遜河下游的支流。
Jégu, M., 2003. Serrasalminae (Pacus and piranhas). p. 182-196. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 39031)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 商业性
工具
特别资料
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网络资源
基于模型的估算
系统发育多样性指数 (参考文献
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.01183 - 0.03689), b=3.12 (2.97 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (参考文献
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
渔业脆弱性 (Ref.
59153): Low vulnerability (12 of 100).
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