Tetra
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Characiformes
- family: Characidae
- genus: Serrapinnus
- species: Serrapinnus piaba
Penedo
Alagoas- Corumbá
Mato Grosso do Sul- Buritizeiro
- Pirapora
Minas Gerais- Ceará Mirim
Rio Grande do Norte- Cacequi
Rio Grande do Sul- Bebedouro
São Paulo
Brazil
Fuerte Olimpo
Alto Paraguay- Areguá
Central
Paraguay