@TARHEEL78, my system is 84x34. In a non-emergency situation, I personally would start with a fish trap for a fairy wrasse. If you catch any of the aggressors, I would separate them to an acclimation box, sump, or other holding system until I caught the desired wrasse. In a time sensitive situation or if I wanted quick results I have used the coralling technique that
@GBRsouth shared. It is very effective, but it helps to have a second set of hands.
There are several techniques for catching a fish out of a reef tank. None of them are perfect or work equally for all fish, and many require time and patience. I have a 330 gallon mixed reef that's about 16 months old. In the past year, there have been a couple occasions where I've needed to...
www.reef2reef.com
Good luck!
Also, some wrasse photos from this morning.
Potter's Leopard, M. geoffroyi
Radiant, H. iridis
Diamond-tail Flasher, P. attenuatus