| Common name | Acaraúna-preta |
| Language | Portuguese |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | |
| Ref. | Nomura, H., 1984 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | color pattern(s) |
| 2nd modifier | color pattern(s) |
| Remarks | Acará = fish with scales (Tupi) + una = black (Tupi), according to Ferreira (1999) + preta = black (Ref. 38265). Also Ref. 7145. |