n = 6
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Onuxodon albometeori | Koeda, 2019 | Onuxodon albometeori | Carapidae | White pearlfish |
| Onuxodon fowleri | (Smith, 1955) | Onuxodon fowleri | Carapidae | Fowler's pearlfish |
| Onuxodon margaritifer | (Rendahl, 1921) | Onuxodon margaritiferae | Carapidae | Bivalve pearlfish |
| Onuxodon margaritiferae | (Rendahl, 1921) | Onuxodon margaritiferae | Carapidae | Bivalve pearlfish |
| Onuxodon parvibrachium | (Fowler, 1927) | Onuxodon parvibrachium | Carapidae | Oyster pearlfish |
| Onuxodon parvibranchium | (Fowler, 1927) | Onuxodon parvibrachium | Carapidae | Oyster pearlfish |