Sorry to hear that you are going through this. The fish hitting the surface sounds like a DO problem. They were trying to get oxygen and died because there was not enough in the water. I am not an expert on this, but I am sure that someone will give you a better breakdown of what could have happened.

The fish are not yellow perch. More like a large bait fish like a golden shinner.


Brian
Retired Coach

Just another day in paradise!