| Family | Scientific Name | Author | Year | Common Name |
| Macrouridae | Malacocephalus occidentalis | Goode and Bean | 1885 | Western Softhead Grenadier |
All Malacocephalus — Anus surrounded by a broad margin of naked skin or far removed from anal fin. Branchiostegal rays 7. Teeth in lower jaw enlarged, in 1 row. A large, bean-shaped fossa between bases of pelvic fins. Scale rows present over lower branchiostegal rays.
Malacocephalus occidentalis
Unique Characters: Pelvic-fin rays 8. Premaxillary teeth in more than 2 rows. Spinous dorsal-fin ray serrated. Tip and leading edge of snout blackish.
Similar Species: Softhead Grenadier Malacocephalus laevis. Pelvic-fin rays 9. Premaxillary teeth in 2 distinct rows. Spinous dorsal-fin ray smooth. No black margins on snout.
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