We're talking about the Hawaiian Cleaner Wrasse.
http://www.wetwebmedia.com/labroide.htm
"The obligate cleaner Labroides wrasses should remain in the ocean, and you should knowingly spend your money on hardier species."
That's from Bob Fenner. We're not talking about Leopard Wrasses or any kind of general cleaner wrasse, and quite frankly I don't want to know how many you killed, when the number should be 0.
Like I said, I have a tank, a 210 and I've had this fish. This isn't the story of the Blue Tang living in a 20 gallon tank, this is a fish that has a nearly 100% short term mortality rate in aquariums.
He isn't the first one to try, and he certainly won't be the last. I'm saying this specific species should first be figured out how to keep by Marine Biologists, then we can give it a shot. Other fish with at least a somewhat lower mortality rate I have no problem with.