Koi fish are a colorful, ornamental versions of the common carp. … There are now dozens of different color varieties of koi. Koi can grow up to 3 feet (90 centimeter) in length. Wild koi are native to the fresh bodies of water around the Black, Caspian and Aral Seas.
The image is for illustration purposes only. Due to natural colour variations within a species the actual fish may look slightly different.