In fact, during one survey, a species of cutthroat eel believed to be found only near Australia was identified.

Synaphobranchus is a genus of eels in the cutthroat eel family Synaphobranchidae.

Arrowtooth eel may refer to several species of cutthroat eels:

Predators include large deep-roving sharks, cutthroat eels, merluccid hakes, and snake mackerels.

Synaphobranchidae (cutthroat eels)

Synaphobranchus affinis (Grey cutthroat eel)

Synaphobranchus brevidorsalis (Shortdorsal cutthroat eel)

Meadia abyssalis (Abyssal cutthroat eel)

Cutthroat eels are a family, Synaphobranchidae, of eels, the only member of the suborder Synaphobranchoidei.

Histiobranchus bruuni (Bruun's cutthroat eel)

The muddy arrowtooth eel, Ilyophis brunneus, is a cutthroat eel in the family Synaphobranchidae.

The grey cutthroat eel, Synaphobranchus affinis, is a cutthroat eel.

Some of the more abundant upper continental slope fish species, such as cutthroat eel and longfinned hake, mainly feed on on epipelagic fish.

The basketwork eel, Diastobranchus capensis, is a cutthroat eel, the only species in the genus Diastobranchus.

The deepwater arrowtooth eel, Histiobranchus bathybius, is a cutthroat eel of the genus Histiobranchus, found globally.

It feeds mainly on bony fishes such as cutthroat eels, grenadiers, and snake mackerel, and also takes lanternsharks, squids, octopuses, and Heterocarpus shrimp.

Some authors classify it as the sole member of the subfamily Simenchelyinae of the family Synaphobranchidae, or cutthroat eels, while others place it in its own monotypic family, the Simenchelyidae.

Histiobranchus is a genus of eels in the family Synaphobranchidae.

Eels in the Synaphobranchidae family live as deep as 4000 m below the surface.

Linkenchelys multipora is a species of deep-water eel in the family Synaphobranchidae.

Cutthroat eels are a family, Synaphobranchidae, of eels, the only member of the suborder Synaphobranchoidei.

The muddy arrowtooth eel, Ilyophis brunneus, is a cutthroat eel in the family Synaphobranchidae.

The second is that the Synaphobranchidae (a specific family of leptocephalus) have telescopic eyes, meaning that there is a tubular eye with a sphere-shaped lens on the top.

Some authors classify it as the sole member of the subfamily Simenchelyinae of the family Synaphobranchidae, or cutthroat eels, while others place it in its own monotypic family, the Simenchelyidae.