Kaneko Koi Farm ( Kaneko Yasuaki) – is run by Haruo Aoki and Motoyoshi Aoki in the Nagaoka region. Established in the 1960’s, they have become well known around the world for their excellent quality Shiro Utsuri and are one of the first breeders to stabilize the Kujaku variety. They also breed great Beni Kikokruyu and Hikarimono.