The skill and patience of centuries of Japanese breeders is apparent when admiring Koi fish. A native of Eastern Asia, these beautiful, animated, hardy, specimens are completely peaceful even at their maximum captive length of more than two feet. Koi fish can survive winters in many areas of Canada. Simply allow oxygen exchange by ensuring that a hole exists in any solid ice that might form on the top of the pond. These gentle giants can live in captivity for decades. They are aggressive eaters, yet can adapt to eat from the owner’s hand. Koi are omnivores and will eat a variety of high-quality flake or pellet food. All plant roots in a pond should be protected, as the Koi fish will enjoy the tasty treat of any exposed plant roots.