My clown is acting lethargic and has stopped eating today. She also has something “cloudy” appearing on her back, near her dorsal fins. I’m not sure if there is anything I can do, but I’d appreciate any help you can provide in IDing the problem. I don’t currently have a QT tank, nor have a way to do one, but might be able to get the LFS to QT her (or all the fish) for me.