The male's dorsal and pelvic fins have long threadlike rays, and the tips of its red tail fins are extended in a swallowtail shape. The varied effects of their fins rippling in the water are very pleasing to the eye.
尤其雄魚背鰭與腹鰭上，各拉出彩帶般的長絲狀軟鰭，配合著紅色燕尾般的尾鰭，在水裡搖曳多姿，威風十足。