I just noticed my first fish kill this afternoon. I have about
15-200 small bg dead. ALL of them are about 3 inches and smaller. I did find a couple still holding on barely gasping for air. I was thinking that I may have an oxygen problem but all the other fish are very active and are feeding like crazy. The weather has been very nasty with large amounts of rain for the last couple of months with temps in the 40's to high 50's with no sunshine. The sun has finally shown it's self yester and today bringing the temp to the mid 70's. Any Ideas on what could be going on?

Thanks!!