I had this platy in my tank for 3 weeks now. His tank mate died, so I got him a different one. He HATES this new one. Constantly was chasing it around and cornering it. I put the new one in an isolation tank and will be taking him back. I was also told the wrong information. I got told two male Platies can be together, which I now know is false and another reason the new one is being taken back. However, my Platy I had for awhile now looks kind of swollen. He was scavengering for food on the bottom of the tank even though he got fed this morning. What could this swolleness be from? Bloated from eating the extra food? From stress of the new fish? Help! He’s my favorite and I don’t want anything to be wrong with him The close up, brighter picture was taken Tuesday. The darker picture was just taken. It’s not a huge different but I can tell there’s a slight difference.