Hey, everyone! We moved this bloated fish from my BF's tank to a hospital tank, but we don't know what kind of fish he is or what his disease might be. In the photo you can see some red discoloration. We don't know if that's a sign of internal injury or what. He was in a 55 gallon community tank and everybody else seems to be ok so I wouldn't think it's a water quality issue, but I'm REALLY new at this. I've put Epsom salt in the tank and was going to try feeding mashed peas in case he's just constipated. Any advice would be welcome! Thanks!