| Common name | Rikuzen flounder |
| Language | English |
| Type | AFS |
| Official trade name | No |
| Rank | 1 - (Legal common name (unique)) |
| Country | United States (contiguous states) |
| Locality | |
| Ref. | Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | locality/area |
| 2nd modifier | |
| Remarks | 'flounder', i.e., flatfish, Middle English, from Anglo-French 'floundre', of Scandinavian origin; akin to Old Norse 'flythra', i.e., flounder (Ref. 27888). |