Pond Boss Forums POND CONSTRUCTION Building a dam A pond dedicated to Redear Sunfish

Hey John,

You know I'm not a pro but it looks like black spot disease to me which IIRC is part of a flat worm life cycle. As you haven't had the SMB that long and have RES for snail control, I suspect it came in with your SMB stockers. I had it on a small YP I caught a couple years ago in my pond. My PS must be doing the job on snail control because I haven't seen a fish with it since. As long as you have a healthy RES population, IMO it is nothing to worry about.

Bill D.