| Common name | Truta-arco-Ãris |
| Language | Portuguese |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Territory | Portugal |
| Locality | |
| Ref. | Sanches, J.G., 1989 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | color pattern(s) |
| 2nd modifier | |
| Remarks | 'arco iris', i.e., 'rainbow'; 'truta' from Latin 'trocta, tructa', i.e., a fish with sharp teeth, from Greek 'troktes', i.e., gnawer, from 'trogein', i.e., to gnaw (p. 1266 in Ref. 11978). |