I keep show koi in my backyard pond. It's 5000 gals. with 12 VERY large Japanese koi. If you think bonsai are trying sometimes, keep koi. My koi are all females, just like in the real world, they are more desirable than males because they have prettier shaped bodies (TRUE). The Japanese looking house used to be my shade house, but now my wife took it over for her potting house.
Harry
Harry