[quote=murf;3755532] ouch Lorraine.
Murf
http://www.associatedcontent.com/art...ns.html?cat=53
My neighbors filled their beautiful new pond a few years ago with large gorgeous koi at no small expense. I asked her the other day what ever happened to them, and she said because of the koi and fresh water the racoons moved in and ate all of the fish and actually tried to live in the basement, and they finally had to drain the pond for 6 months, the racoons finally moved on and now they have filled the pond and have it operating again but are afraid the frogs that have moved in might bring the racoons back.
I was just trying to help you to know that koi can be expensive dinners for racoons. 
My poor neighbors learned the hard way that racoons are koi enemy number two right behind domestic cats. There are lots of articles on the internet on how to protect your koi from predators.