Kohaku - (co-hah-ku) : White (Shiro) Koi with bold red (Hi) patches. This is the classic Koi pattern. The most expensive Koi in the world is a Kohaku and sold for 1.7 million dollars! And won Grand Champion of 2019 at the All Japan Koi Show. It is part of the Gosanke Group along with Sanke and Showa.