| Valid name | Promethichthys |
| Synonym | Type: Prometheus atlanticus Lowe = Gempylus prometheus Cuvier, by orig. design. |
| Synonym | Promethichthys Gill, 1893 |
| Synonym | Gender: M; Mem. natn Acad. Sci., 6: 115, 123 |
| Synonym | Prometheus Lowe, 1841, Trans. zool. Soc. London, 2: 181 (type: Prometheus atlanticus Lowe, by monotypy), preoccupi |
| Synonym | ? Dicrofus Günther, 1860, Cat. Fish. Brit. Mus., 2: 349 (type: Dicrotus armafus Günther, by monotypy, no locality) |