Pond Boss Forums FISH & FISHING Sunfish-Including Largemouth and Smallmouth Bass sick fish ???

I have heard of this in blue gill when they are stressed. Those fins are the first to go. Most of the time the stress is from low dissolved O2 or excessive other gasses taking the O2s place.

Guys transporting fish long distance have said those fins are the first to go from low O2.

Hope this helps and I hope you have lots of them so the loss is minimal.

Cheers Don.