Serrasalmus geryi
| Serrasalmus geryi | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Serrasalmidae |
| Genus: | Serrasalmus |
| Species: | S. geryi
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| Binomial name | |
| Serrasalmus geryi Jégu & dos Santos, 1988
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Serrasalmus geryi, known as the violet line piranha or Gery's piranha, is a species of freshwater ray-finned fish belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. It is found in the lower Tocantins and Araguaia Rivers of Brazil.[2][3] The species is notable for being the one of only the members of the genus Serrasalmus that can coexist with others of the same species in captivity, however caution is advised. Gery's Piranha reaches sizes up to 12 inches in length. As of 2018, it is classified as Least Concern by the International Union for Conservation of Nature.[1]
Description
[edit]The body shape of Serrasalmus geryi is very laterally compressed, similar to other Serrasalmus genus members S. altuvei, S. hastatus, S. compressus and S. altispinis. The fish is distinctive at all ages, possessing a broad dark stripe running from the lower mouth to the top of the beginning of the dorsal fin. S. geryi does not exhibit sexual dimorphism.
The body is silver with numerous small spots on the flanks. The anal fin is hyaline with a broad black margin. The pectoral and ventral fins are clear. A humeral spot may be present. Eyes silvery to reddish-orange.
Mature individuals reach a length of 25 cm (10 inches), with specimens rarely longer than 20 cm (8 inches) in captivity.
References
[edit]- ^ a b Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Serrasalmus geryi". IUCN Red List of Threatened Species (in Portuguese). 2022: e.T141062689A141062714. doi:10.2305/IUCN.UK.2022-1.RLTS.T141062689A141062714.pt. Retrieved 20 July 2025.
- ^ Deprá, G. C.; Oliveira, A. G.; Silva, A. B.; Frota, A.; Proença, H. C.; Message, H. J.; dos Reis, R. B.; Ota, R. R. (2021-03-01). "A New Potential Invader: First Record of the Pirambeba Serrasalmus geryi (Characiformes: Serrasalmidae) in the upper Paraná River floodplain, Brazil". Journal of Ichthyology. 61 (2): 190–195. doi:10.1134/S0032945221020041. ISSN 1555-6425.
- ^ Jégue, Michel; Santos, Geraldo Mendes dos (1988). "Le genre Serrasalmus (Pisces, Serrasalmidae) dans le bas Tocantins (Brezil, Para) avec la description d'une espece nouvelle, Serrasalmus geryi, du bassin Araguaia-Tocantins" (PDF). Revue d'hydrobiologie tropicale (in French). 21 (3): 239–27.