Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations What’s eating my channel cats?

I have heard that CC are sensitive to copper like copper sulfate or Cutrine type chemicals.

Is there a chance you treated heavily with an algae reducing chemical recently?

I'm no expert at this. I just recall CC being sensitive to it and I have always wondered about it when I treated the border of my pond with Cutrine. I never had any bad effects that I noticed but I only treated a very small percentage of the pond area.