The sablefish (Anoplopoma fimbria) (the sablefish is not a true butterfish; but is called such informally)
Perciform fish of the family Stromateidae, including the genera Pampus, Peprilus and Stromateus.
A rock gunnel, Pholis gunnellus, an eel-like fish found in the intertidal and subtidal zones of the North Atlantic.
The New Zealand fish Odax pullus, also known as greenbone.
Any fish of the escolar family, Gempylidae.