Queen angel is a holacanthus.
they could easily get a long. theres no telling til you try it. initially, they might butt heads, and then later get a long. also vice versa, they could get along fine, then later have problems.
my blueface initially didnt take adding a 6" falser personifer well. he was terrorizing the FP nonstop. i separated them with eggcrate for a day. the last 2 days, they have been getting along fine.
my BF and emperor juvie has been together since march and they not once has bothered each other. both about 4". not to say that they definitely wont fight later on, but as of right now, i have had no problems between the two.