General
Koi fish are gentle, patient animals, found in rivers or streams, though they can travel to most bodies of water. They are graceful and lithe, covered in varying colors of shimmering scales. Graceful and full of healing powers, koi fish are generally overlooked, but their subtle magic is extremely valuable. The owner of any such fish will find, if they swim with their sweet pet, that the koi fish enables the master to breath under water for short periods of time. This aids a magi greatly in searches for rare eggs beneath the waves. The pond these breeds frequent has a small tunnel leading to greater waters, much like Lake Lakira, and these kois move back and forth as they please. Their young are generally kept inside the peaceful pond, safely under the supervision of their elders.
Egg
Light in your hands, this egg looks rather unlike most koi eggs.
Hatchling
You watch as a beautiful koi fish that resembles water swims happily, iridescent scales catching the sun's rays. This little one swims about quickly, enjoying jumping high, showing off its incredible agility. Spending its time with others of its kind, koi fish hatchlings are extremely playful and always eager for attention. One of their main occupations is exploring, as every body of water near The Keep is full of exits for creatures to find their way to deeper waters. These outings are reserved for older hatchlings, though, as koi young are known to be mischievous and adventurous.
Adult
This gorgeous koi fish has matured into a radiant adult. It possess powers over fresh water, and a faint blue glow can occasionally be seen in the water around it. A powerful tail makes for great speed and nimbleness. When the water around a koi has changed in color, the koi fish has cast some enchantment on the water around it. Minor powers such as healing and charms for relaxation are a koi's specialty, and these mild creatures love assisting all who ask. Koi are often seen caring for their young and watching over the animals that share the lake with them. Some species can only be found in a certain pond, where these rarer fish can be found by magi. It is said that if a magi makes an offering of gold, these kois will offer an egg in return. There is no guarantee that this will occur, however, and oftentimes a young magi will have to visit this hidden pond many times before gaining a new companion.
Notes
Obtained from: Koi Pond
Breeding: Yes
Renaming cost: 200 gold
Release date: May 10th 2010
Element: Life 
Breeds with the following:
Amethyst Capricorn + Ruby Koi = Ruby Capricorn (Very hard)
Tidal Capricorn + Ruby Koi = Ruby Capricorn (Hard)
Meridian Capricorn + Ruby Koi = Ruby Capricorn (Normal)
Hallow Capricorn + Ruby Koi = Ruby Capricorn (Normal)
Ruby Koi + Ruby Koi = Ruby Koi (Hard)
Sprite art: Umbreonage | Description: Damien