| Valid name | Gymnelus |
| Synonym | Gymnelis Reinhardt, 1834. |
| Synonym | Gymnelus Reinhardt, 1834 |
| Synonym | Type: Ophidium viride Fabricius, by orig. design. (also publ., 1837: xxi). |
| Synonym | Gymnelichthys Fischer, 1885, Jahrb. Wiss. Anst. Hamburg., 2: 60 (type: Gymnelichthys antarcticus Fischer, by monot |
| Synonym | Nemalycodes Herzenstein, 1896, Ann. Mus. zool. Acad. Imp. Sci. St. Petersb., 1: 14 (type: Nemalycodes grigoriewi H |
| Synonym | Gender: M; Overs. K. danske Vidensk. Selsk. Forh., 1832-1833: 4 |
| Synonym | Cepolophis Kaup, 1856, Arch. Naturgesch., 22 (1): 96 (type: Ophidium viride Fabricius, by orig. design.) |