''Synaphobranchus'' is a genus of

eel Eels are ray-finned fish belonging to the order Anguilliformes (), which consists of eight suborders, 20 families, 164 genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage ...

s in the cutthroat eel family,

Synaphobranchidae Cutthroat eels are a family, Synaphobranchidae, of eels, the only members of the suborder Synaphobranchoidei. They are found worldwide in temperate and tropical seas. Cutthroat eels range from in length. They are bottom-dwelling fish, found in ...

. It currently contains the following species: * ''

Synaphobranchus affinis ''Species affinis'' (commonly abbreviated to: ''sp.'', ''aff.'', or ''affin.'') is taxonomic terminology in zoology and botany. In open nomenclature it indicates that available material or evidence suggests that the proposed species is related t ...

'' Günther, 1877 (Grey cutthroat eel) * ''

Synaphobranchus brevidorsalis ''Synaphobranchus'' is a genus of eels in the cutthroat eel family, Synaphobranchidae. It currently contains the following species: * ''Synaphobranchus affinis'' Günther, 1877 (Grey cutthroat eel) * '' Synaphobranchus brevidorsalis'' Günther ...

'' Günther, 1887 (Shortdorsal cutthroat eel) * ''

Synaphobranchus calvus ''Synaphobranchus'' is a genus of eels in the cutthroat eel family, Synaphobranchidae. It currently contains the following species: * '' Synaphobranchus affinis'' Günther, 1877 (Grey cutthroat eel) * '' Synaphobranchus brevidorsalis'' Günthe ...

'' M. R. S. de Melo, 2007 * ''

Synaphobranchus dolichorhynchus ''Synaphobranchus'' is a genus of eels in the cutthroat eel family, Synaphobranchidae. It currently contains the following species: * '' Synaphobranchus affinis'' Günther, 1877 (Grey cutthroat eel) * '' Synaphobranchus brevidorsalis'' Günthe ...

'' ( E. H. M. Lea, 1913) * ''

Synaphobranchus kaupii The Kaup's arrowtooth eel (''Synaphobranchus kaupii'', also known as the Kaup's cut-throat eel, the Gray's cutthroat, the Longnosed eel, the Northern cutthroat eel, or the Slatjaw cutthroat eel) is an eel in the family Synaphobranchidae (cutthroat ...

'' J. Y. Johnson, 1862 (Kaup's arrowtooth eel) * ''

Synaphobranchus oregoni ''Synaphobranchus oregoni'' is an eel in the family Synaphobranchidae (cutthroat eels).Castle A castle is a type of fortification, fortified structure built during the Middle Ages predominantly by the nobility or royalty and by Military order (monastic society), military orders. Scholars usually consider a ''castle'' to be the private ...

, 1960

References

* Synaphobranchidae Taxa named by James Yate Johnson {{Anguilliformes-stub