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Pygocentrus nattereri, Red piranha : fisheries, gamefish, aquarium
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) > Serrasalminae
Etymology: Pygocentrus:Greek, pyge = rump + Greek, kentron = sting (Ref. 45335). Eponymy: Dr Johann Natterer (1787–1843) was an Austrian naturalist and collector. [...] (Ref. 128868), visit book page. More on author: Kner.
Issue Recent observation reveal NMW 16167 dry specimen as possible syntype. See Fink & Zelditch (1997:179) for taxonomic status. See Zbinden (1973) and Sazima and Machado (1990) for details on behaviour.
Environment: milieu / climate zone / depth range / distribution range 生態學
South America: Amazon River basin, Paraguay-Paraná River basin, northeastern Brazilian coastal rivers and Essequibo River basin (Ref. 39031). Reported from the Uruguay River, Brazil (Ref. 79585). 南美洲: 亞馬遜河流域, 巴拉圭- 巴拉納河的流域，巴西東北部沿海的河川， Essequibo 河流域。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm? range ? - 15 cm Max length : 50.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 81048); 最大體重: 3.9 kg (Ref. 40637)
Common in creeks and interconnected ponds in Matto Grosso, Brazil, where it influences distribution and feeding of other fish (Ref. 9080) and in areas of high primary production in Rio Machado and Rio Negro (Ref.9096). Adults feed mainly at dusk and dawn. Feeds on insects, worms and fish (Ref. 7020). Medium-sized to large individuals (15-24 cm length) forage mainly at dawn, late afternoon and night up to about 2200H, whereas smaller fish (8-11 cm) are active mainly during the day (Ref. 9080). Teeth replacement on alternating sides of jaw allows continuous feeding. Its powerful dentition can inflict serious bites. Has a highly evolved auditory capacity and a 'lurking', then 'dashing' behavior during daytime. Shows hierarchies within small schools (Ref. 9077). Available information on body composition of 'piranha caju' flesh is 8.2% fat, 15.0% protein and 4.4% ash (Ref. 9251).
Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Males and females appear externally alike (Refs. 2279 & 9245). In 'Serrasalmus sp. aff. nattereri', reported to occur in the Orinoco basin (Venezuela, Guyana), the males have more 'bull-like' heads, but are more slender than females (Ref. 1672). Eggs are laid on tree roots trailing in the water and are guarded; the reproductive success may vary strongly from year to year depending on how the savanna was flooded (Ref. 9078). The eggs are large, adhere to plants and are not attacked by the parents. They hatch in 9 to10 days (Ref. 7020).南美洲: 亞馬遜河流域, 巴拉圭- 巴拉納河的流域，巴西東北部沿海的河川， Essequibo 河流域。
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.01373 - 0.03180), b=3.16 (3.04 - 3.28), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
營養階層 (Ref. 69278): 3.7 ±0.61 se; based on food items.
Generation time: 1.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
