NND Koi Farm stands for Nishikigoi Niigata Direct, a group of three koi breeders in Niigata, Japan. They are Tanaka Makoto, Oomo Fujio, and Kobayashi. They share the facilities and equipment to produce high-quality koi for a better price. They breed various varieties, such as Go Sanke, Shiro Utsuri, Kujaku, Kikokuryu, and others. They are especially known for their Sensuke Kohaku, which have a deep red color and a clear white background.