Classification / Names
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Teleostei (teleosts) >
Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Serrasalminae
Etymology: Pygopristis: Greek, pyge = rump + Greek, pristis = saw (Ref. 45335).
More on author: Cuvier.
Issue
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.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Orinoco River basin, north and eastern Guiana Shield rivers; tributaries of the lower Amazon River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.5 cm TL male/unsexed; (Ref. 111697)
Rare (Ref. 12225). Possesses powerful dentition that can cause serious bites.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Traumatogenic
Human uses
Fisheries: commercial
Tools
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.01189 - 0.03673), b=3.12 (2.97 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).