I too have noticed a few dead full size hybrid bream, about 1 or 2 a week since the pond started warming up. Only the largest and full grown fish. Stats: 1 acre pond in south Louisiana, 24/7/365 aeration, only well water and rain accessible, and water tests show good chemistry. Supplemental feeding a few times a week. No dead bass (yet). This is the 4th year of pond life since stocking 3 years ago. Started with 2K bream and 100 bass. This pond has been textbook as far as fish growth progress and maintenance goes.

My question I suppose is what about natural mortality? How long does a Hybrid Bream live anyway? Could I just be seeing the beginnings of a natural process since I can't find anything else obvious? Would that also be the cause possibly of some of the other kills that others are seeing as well? Just a thought and grasping for a logical (a.k.a. not my fault!) answer to the problem. Thanks

Ken