I'm having some fun reading some good reef books I could never afford such as TRA 1 and 3 among others. (got them used from Amazon!)
Anyway, I saw where there is a neon goby that looks a lot like a cleaner wrasse and I'm wondering if this is what I have. When I bought it, I believe it was labeled Cleaner Wrasse and now I find that they are supposed to be rather difficult.
The photos aren't great because I had to crop them out of larger photos.
Anyway the little bugger nips me every time I have my hand in the tank - which has been often, lately. He's doing great, though.