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Although the body of the reef fish can vary in shade from light to dark blue, the dorsal, anal and caudal fins are golden blue. As juveniles, the edges on their dorsal and anal fins and the rings around their eyes are purple-blue, blue or blue-green. Juveniles may also be larger than adults and are called Atlantic yellow tang surgeonfish until they become adults. Their colors change during growth from a yellow juvenile, yellow tailed blue subadult and the blue adult phase.
Acanthurus coeruleus is common off of Florida, the Bahamas, and other places in the Caribbean sea, including Bonaire. Blue Tangs are very common in Belize and especially Ambergris Caye. They are also common in the Gulf of Mexico. They are also found south to Brazil and north to New York and eat krill.
saw in bonaire