Well.. to be honest ...the herons/ hawks/ snakes around here dont really care about who designed your pond or how inbred your koi are... all they seem to be interested in is those pretty colorful fishes. But like Sand Angel said... most koi will survive winter here as long as you break the ice so they can get air. But knowing what I do about the local predators, there is NO WAY I would spend alot of $$ on fish for an ornamental garden.
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