Mayan Butterfly Koi
Mayan Butterfly Koi has vibrant colorations and elongated fins that flow through the water. Their fins resemble the wings of butterflies, which is how they got their name. Koi can live 25 to 35 years (some even longer) in captivity if properly cared for and can get as large as 3 feet long, so they will need quite a large space specific for koi.