My fancy goldfish pond babies exceeded 6 inches of total length within a year. The 3 year olds are 9 inches total length. They are also both taller and wider than comets/commons/shubunkin. Nevertheless, you could stock your little pond with two goldfish.
Most people seem to regret getting mosquito fish, so the minnows mentioned may be your best bet.
Most people seem to regret getting mosquito fish, so the minnows mentioned may be your best bet.