| Common name | Ryukyu-ayu |
| Language | English |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Japan |
| Locality | Ryukyu Islands |
| Ref. | Sawashi, Y. and M. Nishida, 1994 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | primary lexeme |
| 1st modifier | locality/area |
| 2nd modifier | |
| Remarks | Applies to Plecoglossus altivelis ryukyuensis. |