Fuji ogon koi, where only the head from the Koi is metallic Orenji ogon koi, that is all orange like a typical goldfish, using a crimson splotch on its again. Goldfish fans are often fairly fond og the Orenji.A blemished or soiled head stands out on all Ogon kinds. Yamabuki can vary in tones of yellow, from a lightweight, vivid yellow to the darker