ronquil

from The Century Dictionary.

• noun A fish of the North Pacific, Bathymaster signatus, of an elongate form with a long dorsal having only the foremost two or three rays inarticulate, frequenting moderately deep water with rocky grounds.
• noun One of a group or family of fishes of which Bathymaster has been supposed to be a representative—namely, the Icosteidæ.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A perciform marine fish of the family Bathymasteridae, related to the eelpouts and prowfish.