I currently have a 125 that is stocked with a 6" tiger oscar, 5" green terror, 4" jack dempsey, 4" convict, and a 4" featherfin squeaker. I've always wanted an albino tiger oscar but my green terror refuses to live with one. I've tried different methods of introducing albino oscars into the tank but she's killed 3 of them. I don't want to keep throwing them in there to die so I was considering trying a red devil instead. I have no experience with red devil and have heard a lot of negative things about their aggression. Everyone in my tank lives peacefully right now and I'd like for it to stay that way. What do you guys think about red devils in general and as a tankmate for my current fish? I really wanted to add something that is a pale or albino color to the tank.