| More info | Plus d'info | Mais info | FishBase |
| No. | Valid Name | Author | English Name |
| 1. | Oplegnathus conwayi | Richardson, 1840 | Cape knifejaw |
| 2. | Oplegnathus fasciatus | (Temminck & Schlegel, 1844) | Barred knifejaw |
| 3. | Oplegnathus insignis | (Kner, 1867) | Pacific beakfish |
| 4. | Oplegnathus peaolopesi | Smith, 1947 | Mozambique knifejaw |
| 5. | Oplegnathus punctatus | (Temminck & Schlegel, 1844) | Spotted knifejaw |
| 6. | Oplegnathus robinsoni | Regan, 1916 | Natal knifejaw |
| 7. | Oplegnathus woodwardi | Waite, 1900 | Knifejaw |