| Common name | Baiacu-caixão-de-rio |
| Language | Portuguese |
| Dialect | Tupi-guarani |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | Ceará |
| Ref. | Lima, H.H. and A.M. Oliveira, 1978 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | inanimate object |
| 2nd modifier | habitat/ecology |
| Remarks | Baiacu = small poisonous fish (Bueno, 1998) + caixão = big box + rio = river |