I have a lemon peal angel that I received 3 weeks ago. He is in the quarantine tank and he was eating. I noticed a sore on his side began to develop about 4 days ago. I started treating the quarantine tank with paraguard and so far no improvement. Looking at the pictures from above it looks like his abdomen is also swollen. I have a tiny Diamond goby in there that is totally fine. eating and healthy. How should I go about treating him. Thanks for your help


