| Common name | Pirapucu |
| Language | Portuguese |
| Dialect | Tupi-guarani |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | Fresco River |
| Ref. | Petrere, M. Jr., 1990 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | mod. for size |
| 2nd modifier | |
| Remarks | Possibly a variation of pira (fish) + pucu (long) (Ferreira, 1999) or a variation of 'pirapoc' = swimming bladder |