| Common name | Piranha pacu |
| Language | Portuguese |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | |
| Ref. | Ferreira, E.J.G., J. Zuanon and G.M. dos Santos, 1996 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | inanimate object |
| 1st modifier | behavior |
| 2nd modifier | |
| Remarks | Piranha = scissors (Tibiriçá, 1984) + pacu = from 'pag' + 'u' = the one that eats fast (Bueno, 1998) |