He does and I did notice that when my cleaner took his vacation to the sump for a couple of weeks that there was a "bug thing" on my yellow tang!!! Haven't seen anything since the cleaner went back in.
How many wrasses do you have and are they all in one tank???
you should be really happy about your cleaner, doing the worst job ever for you hah =P im hoping one of my Halichoeres wrasses will do the same.
i have 4 wrasses in total in one tank.