muttonfish

noun

mut·​ton·​fish ˈmə-tᵊn-ˌfish 

: a common snapper (Lutjanus analis) of the warmer parts of the western Atlantic that is usually olive green and sometimes nearly white or tinged with rosy red and that is an important food and sport fish

called also mutton snapper

Word History

Etymology

from its flavor

First Known Use

1735, in the meaning defined above