Ratfish n. : Same as Rat-tail.

Example:
Does Red Lobster serve the recently discovered rare albino Ratfish? And would it be served with melted butta?

Taxonomy
spotted ratfish, fish, Hydrolagus colliei, sharks, free encyclopedia, tail, shallow water, dorsal fin, albino, small fish, elephant fish, search, Lay, the Pacific Northwest, mud areas, green eyes, Diet, clams.

Defination from the web:
... The spotted ratfish, Hydrolagus colliei, is a chimaera found in the Atlantic, Pacific, and Indian oceans. ...