My stock tank is the lowest it's ever been. I've been running water into it weekly to hold the current level. I walked down about 4 days ago and found (4) 8 pound bass floating belly up. I began running water daily and the water level is increasing but each day there are a few more bass floating. We've had several days over the past week in the upper 80's. Could it be the water getting too warm for them because of the low level? Any suggestions would be greatly appreciated. I feed game fish food daily. There are also catfish in the tank but none of those have turned up dead.