| Common name | Longfin damselfish |
| Language | English |
| Type | Vernacular |
| Official trade name | No |
| Rank | 2 - (Preferred common name (unique)) |
| Territory | Belize |
| Locality | Bacalar Chico Marine Reserve, Turneffe Atoll, South Water Cay Marine Reserve, Sapodilla Cays, Snake Cays (Ref. 128811). |
| Ref. | Harborne, A., 2000 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | |
| 1st modifier | |
| 2nd modifier | |
| Remarks |