jpsdad: The sunfish got in when I stocked seined gambusia 7 years ago. Predominately GSF with some bluegills and hybrids of the two. The dead fish are in too bad shape for me to tell whether they are channels or blues. Quick Reply doesn't give me the option of attaching photos but I've taken some.

FireIsHot: I can't tell whether the dead fish are channels or blues. I'll have to net some out of the water to look for spots and count anal fin rays. I'll get back with that info. The pond drainage area is about 5 acres of lawn and woods. No livestock. Next door neighbor uphill applies herbicides to her lawn and in past years I've monitored very closely to see if the pond life was affected after application and there didn't seem to be any ill effects. After the rain, the water is relatively clear. I can't tell if the gills are inflamed. I'll check but the carcasses are no longer fresh so necropsy may not be accurate or conclusive.

Thanks for your help.