I added a copper band to my tank. First few days he was hiding in the corner because my PBT was being a bully. Then he got used to everything. He was eating frozen shrimp. Last night I checked on my tank before I went to bed and it looked like his top fins were bleeding a little. Then I woke up this morning and he was dead. I’m just trying to figure out what it’s from. All the fish seemed to be getting along so not sure what the issue is. Here’s some pics of the body.