| Common name | Cação cabeça-chata |
| Language | Portuguese |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | Northeastern Brazil |
| Ref. | Carvalho, V.A. and R.L. Branco, 1977 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | morphology |
| 2nd modifier | morphology |
| Remarks | Cação = shark + cabeça chata = flat head |