Species · GBIF taxon 5209188
Atlantic Blue Tang
Acanthurus coeruleusAlso known as Blue Barber, Blue Doctorfish, Blue Tang Surgeonfish, Yellow Doctorfish
Atlantic blue tangs undergo a dramatic color transformation, starting life as bright yellow juveniles before maturing into deep blue or purple adults. These active herbivores roam coral reefs in large, single-species schools or mixed-species grazing groups, keeping algae growth in check. Their most distinctive defense is a pair of razor-sharp, spine-like scales at the base of the tail that fold into horizontal sheaths.
MarineReef-dwellingColorful
- diet
- Algae and organic detritus grazed from coral reefs.
- family
- Acanthuridae
- threats
- Habitat degradation, coral bleaching, and collection for the aquarium trade.
- life Span
- 12 to 20 years
LC
Possesses razor-sharp caudal spines that can inflict deep cuts; do not touch or handle.
Possesses spine-like modified scales on either side of the tail base that are razor-sharp and can inflict deep, painful lacerations.
Never attempt to grab or handle a live fish; if caught on a line, use thick gloves and a dehooking tool.- Snorkeling Approach: Move slowly and predictably to watch them graze without scattering the school.
- Look for Juveniles: Search shallow patch reefs and seagrass beds for the bright yellow juveniles.
- Observe Cleaning Stations: Watch for them posing head-down to let cleaner wrasses pick off parasites.