The adonis is just over an inch and the leopardus was about 2.5". There was more then enough hiding places in the tank for them both. It didn't look as if either one had anysort of ripped fins or injurys. They wernt going to be perment tankmates. I just had them together in my quarenteen tank. The adonis is getting moved to another tank in about a week. At that time maybe ill try a royal or a sultan. Or maybe ill wait a while till I find something really cool.