I have a 9"TL Red devil/ midas, was supposedly a RD but I'm quite sure it's a hybrid like most. He is becoming too much of a bully and looks like he's going to need his own tank, (currently in a 110 with syns, and a chocolate). I don't currently have the $ to get a 75+gal but I have a 55 I could put him in. I really don't want to get rid of him either as he is a really cool fish, and will probably be able to get him something larger hopefully ina yr or so. I know it is absolutely not ideal and maybe not even smart, but would I be able to keep the RD in a 55 g by himself. It's a standard 55g so its only 12" wide. Would he at least be able to live moderately comfortably in there for a year or so until I can do something better? Would it stunt his growth, and if so, severely and cause health problems? I keep pretty good maintenance of the tanks and would probably take even been care if that were the case.