The grey cutthroat eel, Synaphobranchus affinis, is a cutthroat eel, the only species in the genus Synaphobranchus. It is found around the world at depths below 1,000 m. Its length is up to 160 cm. The grey cutthroat eel is a moderately deep-bodied eel with a pointed snout, with both the dorsal and anal fins beginning about a third of the way from the front of the body. The gill apertures are short horizontal slits low on the body that join together beneath the throat. The mouth has many rows of small teeth, with larger teeth on the vomer on the roof of the mouth. Scale arrangement is similar to that of the basketwork eel. The colour is a uniform grey to grey-brown with black edges to the fins. Very little else is known. References
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