| Valid name | Opisthoproctus |
| Synonym | Type: 0. soleatus Vaillant, 1888, by monotypy. |
| Synonym | Opisthoproctus Vaillant, 1888 |
| Synonym | Gender: M; Poissons, Expéd. scient. 'Travailleur' et 'Talisman': 105, pl. 14 (fi). l-la) |
| Synonym | Grimaldia Chapman, 1942, Ann. Mag. nat. Hist., (11) 9: 299 (type: Opisthoproctus grimaldii Zugmayer, by orig. desi |