Shiro Utsuri, essentially the most prevalent and common variety of the Utsurimono family members, are koi which has a black base and regions of white sample overlaying the black. 18th Singapore Koi Clearly show & Championship 2014, high quality koi fish for sale, japan koi fish for sale in singapore, https://felixgtenw.blog-eye.com/34665683/shiro-utsuri-koi-secrets