| Common name | Guacarí açu |
| Language | Portuguese |
| Dialect | Tupi |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | |
| Ref. | Santos, E., 1981 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | non-fish animal |
| 1st modifier | mod. for size |
| 2nd modifier | |
| Remarks | Guacarí = variation of 'guacari' = same as 'cacajau' = monkey with a short tail (Ferreira, 1999) + açu = big |