Grey Cutthroat Eel
Synaphobranchus affinis
- Least concern
- Card rarity: Common
- Fish

The grey cutthroat eel (Synaphobranchus affinis), is a cutthroat eel. It was originally described by Albert Günther in 1877. It lives a benthic lifestyle, inhabiting the continental slope and global deep waters including near Portugal, Canary Islands, Morocco, Japan, Australia, and others. It is a marine, deep water-dwelling eel which has been found at depths ranging from 300 to 2,300 meters and at temperatures ranging from 3.3 - 11.3 °C. Males can grow to a length of up to 110 centimetres. It is primarily a scavenger, however it also actively hunts small fish and crustaceans.
Classification
- Class
- Actinopterygii
- Order
- Anguilliformes
- Family
- Synaphobranchidae
- Genus
- Synaphobranchus