rabbitfishEnglishOxford Dictionary of Englishrabbitfish /ˈrabɪtˌfɪʃ / ▸ noun (plural rabbitfish or plural rabbitfishes) 1 a ratfish found in the north-eastern Atlantic and around South Africa. Also called rat-tail Chimaera monstrosa, family Chimaeridae. 2 a fish with a blunt snout and rabbit-like jaws, found in inshore waters of the tropical Indo-Pacific, especially around reefs. Family Siganidae: several genera and species, in particular Siganus oramin.