Anglers love the challenge of catching bluefish because of their aggressive nature and bluish backs.

bluefish 是由 blue（蓝色）和 fish（鱼）组成的复合词，指一种背部呈蓝色的鱼类。这种鱼因其凶猛好斗的习性而成为垂钓者喜爱的挑战对象。