Source: FAO 2002.
| Family | Scientific Name | Author | Year | Common Name |
| Synaphobranchidae | Histiobranchus bathybius | (Gunther) | 1877 | Deepwater Cutthroat Eel |
Histiobranchus bathybius
Unique Characters: Head more elongate, mouth extends to level of posterior edge of eye or beyond. Gill openings separate, although they may be closely approximated. Scales present. Scales present. Gill openings nearly parallel, separated by much less than their length.
Similar Species: None