| Common name | Iú |
| Language | Portuguese |
| Dialect | Tupi-guarani |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Brazil |
| Locality | |
| Ref. | Begossi, A. and J.C. Garavello, 1990 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | taste/smell |
| 1st modifier | |
| 2nd modifier | |
| Remarks | From 'y' = water + 'u' = drink |