If your pond has any type of cover they will find a way to reproduce. My new pond was stocked with fatheads last fall along with blue gills and LM Bass. It is full of both fry from several different fathead hatches (many diiferent sizes) as well as LM bass fry as well. Fatheads do 2 things, reproduce and eat. Not sure what they do first but I have thousands of them from 1 stocking. Ask a local stocking source howmany pounds you should stock.