I have a 300 gallon 10x2x2 tank with 7 wrasses and all get along fine. I have a mystery, solar, blue sided fairy, exquisite, filamented, lubbocks and a melanarus. None of them bother my inverts or shrimp and in fact I added 2 more cleaner shrimp last week and no one bothered them including the mystery. I do have a flame angel that gave chase to a couple of wrasses at first and in fact still gives the mystery the occasional courtesy chase for old times sake. Just make sure your overflows are fish proofed and your tank is covered because all wrasses jump, not if but when. I have even had my solar jump out when I opened the cover to feed and just put him back in.