n = 7
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Malacocephalus boretzi | Sazonov, 1985 | Malacocephalus boretzi | Macrouridae | |
| Malacocephalus hawaiiensis | Gilbert, 1905 | Malacocephalus hawaiiensis | Macrouridae | Hawaiian softhead grenadier |
| Malacocephalus laevis | (Lowe, 1843) | Malacocephalus laevis | Macrouridae | Softhead grenadier |
| Malacocephalus luzonensis | Gilbert & Hubbs, 1920 | Malacocephalus luzonensis | Macrouridae | |
| Malacocephalus nipponensis | Gilbert & Hubbs, 1916 | Malacocephalus nipponensis | Macrouridae | |
| Malacocephalus occidentalis | Goode & Bean, 1885 | Malacocephalus occidentalis | Macrouridae | Western softhead grenadier |
| Malacocephalus okamurai | Iwamoto & Arai, 1987 | Malacocephalus okamurai | Macrouridae |