my brand new Crowned Pearlscaled butterflyfish has its right gill fin rotting, also directly behind the gill there is a cut. Should I do a fresh water dip, or should i go to the lfs and get some kind of medicin? Also im not 100% sure its rot buy everytime I go down there the fin gets smaller and smaller. or should i just let it heal on its own?
Thank you for any help
Thank you for any help