Bruce :

A few fatheads as in 15-20 at a time will not last long in a pond full of large BG , RES and YP. Nor will they eat much before they are consumed esp. if you add them in fall or winter. That is why I said a few , as in supp. if you need to. If you are concerned and need an extra food source then do what a friend of mine does and cut off the tail of the FH with clippers and then put them in. Then they are quickly eaten or die.