Hummmmm, here's a cool link I found on your little girl:
http://www.aquariumlife.net/profiles...nyi/100002.asp
So, apparently, even at 2", they can be fierce little killers. Kinda shocking! I guess they need a big tank because they are just SO ridiculously aggressive!

It looks like Frontosas get really big - 12", so they would likely need way more than 55g. They would also eat smaller cichlids.... Yeah, it may just be better to re-home the kenyi cichlid and hold off on any new ones.
I don't know if you would think these are cool or not, but have you looked at dwarf gouramis?
http://www.liveaquaria.com/product/p...974&pcatid=974 They come in really striking colors. You could do one of those in your 10g instead of the cichlid and he would be really happy and look awesome. (
DG are aggressive with other DG, so they have to be singles unless in a big tank, but one would be great for the 10g.) Just a thought.
And you're totally welcome.

This place is all about learning and helping each other out.