| Common name | Aracu cabeça gorda |
| Language | Portuguese |
| Dialect | Tupi |
| 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 | primary lexeme |
| 1st modifier | morphology |
| 2nd modifier | |
| Remarks | Aracu = same as 'piaba' = fish species + cabeça gorda = fat head |