| Common name | Dark Tonguefish |
| Language | English |
| Type | Vernacular |
| Official trade name | No |
| Rank | 2 - (Preferred common name (unique)) |
| Country | Saint Helena Island |
| Locality | |
| Ref. | Edwards, A., 1990 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | morphology |
| 1st modifier | color pattern(s) |
| 2nd modifier | |
| Remarks | Tonguefishes are tongue-shaped flatfishes with both eyes on the left side of the body (Ref. 5288). |