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

• 扳机鱼，许多色彩鲜艳的鳞魨科的鱼，生长于温暖的海岸水域中，体型较圆，前部的前鳍有两根直立的硬刺，如果受到威胁，硬刺便直立不动