How many in koi fish are easy to raise, and how many in koi fish are the most auspicious.

1. Generally speaking, two tails are enough, man.

2. You can also choose to keep three, five, six and Kyubi no Youko. There is a saying in Chinese traditional geomantic omen that "three things are inexhaustible, and six things are infinite". Sanwei means "Three Yang Kai Tai" and Vulpix means "Auspicious"; Five tails means "Five Blessingg is in danger", and Kyubi no Youko stands for high position.