If we have to think about a beautiful type of fish, many species will surely come to our minds, but there is only one that can surprise us as much as Koi fishes do. These rather big and colorful fishes are typical of Japanese-like ponds and even though they are to be found in most of the cases in a reduced number of colors (such as orange, white, red, black, golden and yellow), the possibilities of combination for such colors are impressively endless and each Koi variety has a specific and unique pattern.