Although Otsuka Koi Farm was founded in 1962 by Yoshikazu Otsuka, he is the third generation in his family to breed koi. They breed a wide range of koi, producing 15 different varieties, and they have established a reputation as an excellent Asagi producer. However, they are also well known for their high quality Goshiki, Showa and Goshoku Sanke.
Not satisfied with the status quo, Otsuka is always looking to develop new varieties of koi. His most well know introduction is The Kage Shiro Utsuri, that was initially created by crossing an Asagi with a Shiro Utsuri. After more than a decade of work, Kage Shiro Utsuri is a stable variety. The result is a Black and white Utsuri, with reticulated black markings on the white scales.