Most you will catch in the streams will have a hard time beating 2 oz. I like metric system better.
I have pet Fliers that can approach if not exceed the record but they are pellet fed in a tank.
If legal, would be fun to setup a pond with fliers and fatheads to see how big the Fliers could get. They are not as prone to over populate as crappie but I do not know how that would work in a pond lacking bass.
Aquaculture Cooperative Research / Extension Lincoln University of Missouri