I didn't know they were mbunas, lol. They LOVE the worms.
No aggressive behavior from any of the cichlids, aside from my really large (~5") convict, he's a bit territorial and a bit of a chaser, and he tends to bully one of my synos (nudges him on the side, actually did a little damage one time, but only that one time.) And the angels look even better than when I got them. If anyone if fin-nipping them, it's the large Danio and/or the Aussie Rainbow, not the cichlids.