[George]

You are not wrong. The source you quoted from may be wrong. Anyway, in the same source you quoted from, there is a paragraph about tangs (not sure they mean tangs in general or the blue tang)

"Tangs are found in the Atlantic Ocean from New York and Bermuda to the Gulf of Mexico, south to Brazil. They are also abundant in Florida, Bahamas, and the Caribbean Sea. In the eastern Atlantic Ocean it occurs near Ascension Island. It has also been introduced into Hawaii through the release of aquarium fish."

Originally Posted by mrhasan

"The Blue tang, Palette surgeonfish, Regal tang, Hippo tang, Indo-Pacific tang, Flagtail surgeonfish or Blue surgeonfish, Paracanthurus hepatus, is a fish often found in marine aquaria, the only member of the genus Paracanthurus. It has a royal blue body, yellow tail, and black ‘palette’ design. It grows to a maximum of generally 12.25 inches and is mostly herbivorous. Its range varies widely and can be around the reefs of East Africa, Hawaii, Japan, Samoa, New Caledonia, and the Great Barrier Reef."

Source: http://www.redorbit.com/education/re...380/blue_tang/

I may be wrong though