Yes severums get to big for a 55. I wouldn't put anything in a 55 with a salvini. Keyholes are too passive to be in with convict types. Firemouth would work. Geophagus steindachnerI aka red hump geo would work as well.Dom90 said:I don't think severums would work, I'm pretty sure they get 6-8". Try salvinI cichlids or keyhole cichlids.