Definition of "damselfish" []

• Any of various small tropical marine fishes of the family Pomacentridae, having laterally compressed, usually brightly colored bodies. Also called demoiselle. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In the 10-year period in question, 33 new fish species have been found in the waters around the island, including the damselfish, a strikingly brilliant blue wrasse and seven species of zig-zag rainbow fish, an 11cm-long creature which lives in shallow waters."
• "If attacked by a damselfish, it morphs one of its arms into the visage of the fearsome sea snake that eats damselfish."
• "On a recent visit, yellow damselfish peered through a porthole and a mean-mouthed barracuda lurked nearby."