
Koi fish have to swim against the strong. An ancient Chinese legend speaks of courage to swim to the waterfall of the Yellow River Koi, and all fish that have reached a point in the river called "Dragon Gate" to transform into a dragon.
While fish from China, Japan, which has become a household name. Koi is a popular symbol in Japan, usually associated with an extraordinary value. It is said that when these fish are caught on a cutting board and sit still and wait for the fall of the leaf without agitation. You can stand firm in the face of the imminent death of the samurai warrior quality still equates the courage to face the sword.