I currently have three 3" Angels (I plan to get two more), and I was curious if I could put one or more 3ish" Firemouths with them. I have a 7' x 2' x 2', 200 gallon. I also have two Severum, one at 1" and the other at 3". Would they be okay with the Firemouth/s? If Firemouths aren't compatible, what other cichlids are?