This light blue one is showing black bars when angry - could it be ice blue zebra aka maylandia greshakei?? (Im a little confused - on some web picks it has orange fins and on other yellow)
This dark one have a little bit yellow belly and yellow ends of the fins.
I hope that light blue one is not another afra jalo reef because I already have one.
On my amateur eye they look different- afra have white blaze on dorsal and anal fin is getting more and more black.