Here is a question that I was thinking about. Why do they sell or are allowed to sell fish such as these as small exotic fish that they know will grow to large for fish tanks. Most people just throw these fish into local lakes. Thats how some of the lakes in the Seattle area have very big Goldfish in them
I was suprised one time when I was fishing a lake to see goldfish 14" long in it. These were not Koi.