| Scientific Name | Author | English Name |
|---|---|---|
| Oplegnathus conwayi | Richardson, 1840 | Cape knifejaw |
| Oplegnathus fasciatus | (Temminck & Schlegel, 1844) | Barred knifejaw |
| Oplegnathus insignis | (Kner, 1867) | Pacific beakfish |
| Oplegnathus peaolopesi | Smith, 1947 | Mozambique knifejaw |
| Oplegnathus punctatus | (Temminck & Schlegel, 1844) | Spotted knifejaw |
| Oplegnathus robinsoni | Regan, 1916 | Natal knifejaw |
| Oplegnathus woodwardi | Waite, 1900 | Knifejaw |