noun
1. : any of various fishes having variegated colors, broad expanded fins, or both: as
a. : ocellated blenny
b. : flying gurnard
c. : a flying fish ( Exocoetus volitans ) of the Atlantic
d. : any of numerous small brilliantly colored carnivorous spiny-finned fishes of tropical seas that constitute the family Chaetodontidae and have narrow deep bodies and fins partly covered with scales
e. : a small brown fish ( Pantodon buchholzi ) of the streams of western Africa that has elongate lacy pectoral fins suggestive of wings and is often kept in the tropical aquarium
f. : butterfly cod
2. : chiton 2