Description: english Kumonryu Koi Wallpaper is a amazing nature wallpaper which will bring you moving Kumonryu koi fish to your desktop. You will enjoy the serene view of the Kumonryu koi fish in the aquarium. Download free Kumonryu koi Wallpaper and let amazing colorful Kumonryu koi fish take you on an exciting water journey! The Kumonryu koi fish, also known as Dragon Fish is a Doitsu koi that has a jet black pattern that emerges like billowing black clouds against a white background. The Kumonryu is most popular black koi.