My plan with my 75 was going to be my Oscar and my convict . It didn't last long while they were the same size the con bullied and stressed the O almost to death so I took the con out for a couple months and just tried again this week and my O is now 3 x the cons size and started the same stuff. O stopped eating and wouldn't interact so I removed the con for good this time. He will have a new home soon. Any suggestions? This is my display tank I'm the living room so I really wanted at least something else in there.