The xanthic surgeonfish is the latest freak to come out of the family Acanthuridae. You’ve seen the piebald tang, the tricolor scopas, the aberrant scopas, the nearly all white yellow tang Casper but this all solid yellow Acanthurus is the first nearly perfectly xanthic fish we’ve seen in the realm of ornamental marine fish. We’re not sure exactly what species this xanthic tang is but we highly doubt it’s the Achilles tang that the supplier said it was. We can be fairly certain it’s an Acanthurus and one of the species with an elongated body, but your guess is as good as ours.
http://www.youtube.com/watch?v=7LGzSNcNA9Q