try the mfk marketplace or craigslist. it's a pity you're so far away, I already have 2 in my pond and they wouldn't mind the company. (the koi don't either)
you may want to try the nearest public aquarium, that is where mine is going when big. Im lucky to find a home for him eventually, I dont think my 300 is even big enough for them although I do see them being kept in this size tank at fishstores