Fuji ogon koi, where only The pinnacle of your Koi is metallic Orenji ogon koi, and that is all orange like a common goldfish, by using a red splotch on its back. Goldfish fans usually are fairly fond og the Orenji.The Chagoi is referred to as the “Light large”. They don't seem to be quite possibly the most vibrant or fanciest of Koi varieties,