| Valid name | Gymnacanthus |
| Synonym | Type: Cottus ventralis Pallas, 1811, North Pacific Ocean, Japan and Bering Seas, Sea of Okhotsk. |
| Synonym | Gymnacanthus Swainson, 1839 |
| Synonym | Gender: M; Gymnocanthus (author's spelling), Nat. Hist. Fish. Amph. Rept., 2: 181, 271 |
| Synonym | Sclerocottus Fischer, 1885, Jahrb. Hamb. Wiss. Anst., 2: 58 (type: S. schraderi Fisch., 1885, by monotypy). |
| Synonym | Phobetor Krøyer, 1845, Naturh. Tidsskr., 1: 263-264 (type: Cottus tricuspis Reinh., 1832, 'Grönland', by orig. des |