As a general rule, cleaner wrasses don't survive in captivity. There are a few people who got very luck (Meowzer and I) with ones that eat frozen, but we also have very large community tanks for the fish.
If you really do some research around the internet, you'll find that most people are against they're collection in the first place and it's really damaging the populations in some areas. I'd pass on the cleaner wrasse. If you like the looks, etc, look into a neon goby.