I currently have 2 Firemouths in my 55 gallon non-planted tank and I'm wondering if anyone has any suggestions on other chiclids I could have in there. I've heard Severums would be good. I just wanted to verify if I put a severum in the tank that it would be alright? Also any other ideas? Any suggestions for bottom dwellers? Would UD catfish be alright because those are the ones I have in there right now and I'll move them to my other tank if they will present a problem in the future with other fish.