n = 6
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Gephyroberyx darwini | (Johnson, 1866) | Gephyroberyx darwinii | Trachichthyidae | Darwin's slimehead |
| Gephyroberyx darwinii | (Johnson, 1866) | Gephyroberyx darwinii | Trachichthyidae | Darwin's slimehead |
| Gephyroberyx japonicus | (Döderlein, 1883) | Gephyroberyx japonicus | Trachichthyidae | Big roughy |
| Gephyroberyx orbicularis | Smith, 1947 | Gephyroberyx darwinii | Trachichthyidae | Darwin's slimehead |
| Gephyroberyx philippinus | Fowler, 1938 | Gephyroberyx darwinii | Trachichthyidae | Darwin's slimehead |
| Gephyroberyx robustus | Danil'chenko, 1960 | Gephyroberyx darwinii | Trachichthyidae | Darwin's slimehead |