jewels

(I originally posted this in alt.aquaria, and figured here would be a
better place to ask. Sorry for the double posting if anyone notices)

I'm curious, I've recently taken in two jewel cichlids (a guy I knew
was getting rid of them), and I have them happily floating around in
their own 20 gal.

I notice they are african, seem to be in the same pH and temp range as
mbuna... My problem is conflicting information on temperment. Some
show them as semi-agressive, some say they'll take on (and win)
against convicts and dempseys. Some sources even say jewels would be
better suited in an american cichlid tank.

So, needless to say, I'm confused... So, question is, does anyone
think yellow labs, red zebras and jewels can co-exist in a severely
underpopulated 80gal with enough caves for about 40-50 fish?

TIA