I am planning how I want to stock a 20 gallon tank I have. I already have it running and have live plants so now I need to start adding fish. 
I've been doing some research and really like what I've read about Keyhole Chilids.
Would a pair of them work in a 20 Gallon planted tank? I'm guessing any more then two would start getting too crowded?
What would work as tankmates for them? I've read a suggestion of a school of neon tetras. Would that work? How big of a school?
What other suggestions would you have?
I've been doing some research and really like what I've read about Keyhole Chilids.
Would a pair of them work in a 20 Gallon planted tank? I'm guessing any more then two would start getting too crowded?
What would work as tankmates for them? I've read a suggestion of a school of neon tetras. Would that work? How big of a school?
What other suggestions would you have?