In my 180 reef I have a mated pair of coral banded, and am considering adding more. I have 3 peppermint from another tank I want to throw in and I want to add a cleaner shrimp. Do all of these species get along? I may not add all 3 peppermint, b/c I have had a problem with one of them eating my Xenia eay back when. Are the cleaner shrimp good additions?