I wouldn't think that 'sore' would be from spawning as it's on the top of the fish.
I'm not sure how big your pond is, but you may want to consider adding some kosher salt to help with the fish's slime coats.
Thanks, in watching my videos of them spawning it appears the male bumps them several times, so wasn't sure if that activity was causing the Floy tag to be pulled and irritate that area.
My pond is 2 acres, not sure I would be able to add enough salt to assist with helping the slime coating.
I am going to test the water quality. I found it odd that none of the other fish I've caught repeatedly have any sores near the tag. I understand that there's always a possibility of bacteria getting into an area like that to cause this.
I was just curious if others have seen it and what should be done. Cull, treat, or leave it.
