| Common name | Baiacú |
| Language | Portuguese |
| Dialect | Tupi-guarani |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | Northeastern Brazil |
| Ref. | Brandão, J.M., 1964 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | |
| 2nd modifier | |
| Remarks | Baiacu = small poisonous fish (Bueno, 1998); also referred in Carvalho & Branco (1977) for Northeastern Brazil |