nounpl. (see fish) -·fish·, -·fish·es
any of various brightly colored tropical fishes (family Balistidae) of the same order (Tetraodontiformes) as puffers, having a prominent first dorsal fin with two or three spines
Origin of triggerfishbecause depression of the second spine of the fin causes the first to snap down
nounpl. triggerfish, or trig·ger·fish·es
Any of various brightly colored fishes of the family Balistidae of warm coastal waters, having a roundish body and an erectile spine on the anterior dorsal fin that locks upright when the fish is threatened.