Teleostei (teleosts) > Characiformes
(Characins) > Serrasalmidae
(Piranhas and pacus) > Serrasalminae
Etymology: Serrasalmus: Latin, serran, serranus, saw and a fish of genus Serranus + Latin, salmo = salmon (Ref. 45335).
More on author: Kner.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Tropical
South America: Amazon and Paraguay-Paraná River basins (Ref. 39031). Recorded from the Uruguay River (Ref. 79585).
Length at first maturity / Size / Weight / Age
Maturity: Lm 10.8  range ? - ? cm
Max length : 26.4 cm TL male/unsexed; (Ref. 115169); 34.5 cm TL (female); max. published weight: 420.00 g (Ref. 115169); max. published weight: 420.00 g
Occurs usually in small groups of up to 20 individuals which appear to have a definite range within a pond or a creek. Observed to be active mainly during the day. Larger fish extend their foraging until about 9 at night. where it stays in the shallows near the bottom, sheltered among vegetation (Ref. 9080). Larvae and juveniles hide and feed within the root tangle of water hyacinths, which also act as a dispersal agent during floods (Ref. 40399). Larvae feed on
microscopic crustaceans and small aquatic insects; very small size juveniles (about 1.2 cm)
already clip fins of other fishes (Ref. 40399). Juveniles and adults feed mostly on fins and muscle portions of fishes (Ref. 9080, 40398). Adults may scavenge on dead mammals, including humans (Ref. 40400). Attacks on humans with bite outbreaks may occur in dammed
portions of rivers during the breeding season, related to brood protection by the spawning
adults (Ref. 50802).
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. 126983)
Threat to humans
Traumatogenic (Ref. 50802)
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.01330 - 0.01977), b=3.17 (3.12 - 3.22), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.71 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (25 of 100).