I have this 40 gallon breeder (36"x18"x16") and I definitely want to stock it with an Electric Blue Acara. I was wondering if I could fit one or two more of these cichlids (not each, but total) and which would be the best choice(s):
-Firemouth Cichlid
-Keyhole Cichlid
-Festivum Cichlid
Or, would...