Good luck with that. Im sure the LFS you purchased it from has an invoice from a fish wholesaler with the words "purple lineatus tang" on it. Thats what they bought it as, and thats what they sold it as. They didn't misrepresent anything. Wholesalers are tricky all the time with the names they use for common fish. I was tricked once......Ordered a "Redtooth Trigger", know what they sent me? A Niger! It was my fault though, just like THIS is your own fault.