That's too bad. A koi pond is one of the features I would love if I still had an interest in home ownership. The native critters are very adaptive.

@silverotter11 In Japan there was a cartoon about a boy and his pet raccoon that was very popular. So popular in fact that kids all over Japan wanted their own pet raccoons which aren't native. So Americans started sending over young raccoons to fill the want for big $$.
What the Japanese soon learned was that cute little raccoons have viscous bites and these "cute" creatures are little ass holes. So they discovered they needed to abandon the animals somewhere.
In the final story in the cartoon series the kid left his raccoon at a temple, it was a sad moment. So suddenly thousands of raccoons started showing up in Japanese temples for real.
Koi were seriously threatened. New laws about bringing non native animals to Japan were legislated.
I don't know how the story of the raccoon invasion of Japan ends, but after Australia's experience with cute bunny rabbits one would think every nation would know better than to allow this kind of biological contamination.

@Willow_Wisp FUCK!!!!! The raising of Koi is an honored tradition and Koi are highly prized. Hawaii has strict import laws to keep invasive species out. We have some here in WA State. That said I say kill the racoons in Japan and protect the Koi.

@Willow_Wisp Thank you. People really need to question the importation of non-native species. People here who build Koi ponds also have this problem.

Yes they are in the carp family. Bottom feeders. Koi They became very popular in areas where Asian culture became popular.