I've had a Severum in a 55 gallon for about 2 years, along with a festivum, rainbow cichlid, calvus, and 3 pictus catfish. I used to have a few more inhabitants but i gave them away to make room for some more suitable tankmates. I was thinking about adding either a single convict or firemouth ( to avoid their aggressive breeding behavior) but i wasnt sure if they would be able to get along with my Severum, who has pretty much had full control over the tank. Anyone with either of these two species have any insight to this?