GW,
One thing to remember about fathead minnows...since they are small and have a very short lifespan, they make up by reproducing. Baby fatheads are having babies when less than six months of age. Their reproduction can actually become exponential.
Look at fatheads as a renewable, self-sustaining crop. You can harvest them, and they come right back, so long as there are not too many fish eating them in their home.
