Pretty sure my fish have skin flukes. Tank is fully cycled, 0 ammonia, nitrites and low nitrates. I've treated for Ick with the salt treatment a little while back thinking that was the cause of all the flashing or scratching but the fish are still doing it so after further research it sounds like it could be skin flukes. All fish seem very happy and healthy and eat anytime I feed them and never hide but do quite a bit of flashing on the driftwood and rocks. Any recommendations for treating this and which medicine have you had the best results with. Thanks.