central american cichlids

This question has been answered now. I am now aware of the negative outlook on cross breeding cichlids.

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...

Hello I have a 4 year old Jack dempsey currently residing in a 45 gallon corner tank, but I have yet to decide weather its a male or female, please help!