Hi there. While I don't keep any wrasses I just looked up a few and there is no mention of aggression between multiples. I used this site for some quick research
Saltwater Aquarium Fish for Marine Reef Aquariums: Multicolor Lubbock's Fairy Wrasse
They have many wrasses listed, both reef safe and not. It is mentioned quite often that they like to jump so a covered tank is usually required to avoid any carpet surfing.
Hope that was a bit helpful at least!
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.