Ummm a few dead fish if he actually means a few not like 30 to 50 plus then as Eric would say I would not be to concerned if you have had a 5 or 10 fish die in a pond that size. It could be anything from they had some sort of virus or parasite to just to stressed out to water issues to D.O. issues to weather issues??? Like Sunil said we need a little more info to even begin to give you an answer?

RC

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!