The Lake Kutubu Rainbowfish is a beautiful fish with an endearing personality. They are one of the larger rainbow fish, reaching almost 5 inches (12.5 cm) in length. They have constantly changing but always beautiful colors. Don't be turned off when you see these fish in pet shops, as they are usually drab and gray. Once in the right stress free environment these fish will come to life and their colors jump right out at you.