Acanthurus coeruleus
The Atlantic Blue Tang, *Acanthurus coeruleus*, is a stunning and highly recognizable surgeonfish native to the coral reefs of the Atlantic Ocean. Its vibrant, electric blue coloration is a true showstopper, making it a prized addition to many marine aquariums. As juveniles, they are typically bright yellow, transitioning to blue as they mature.
A minimum tank size of 180 gallons is recommended for the Atlantic Blue Tang due to its active swimming nature and potential adult size. This species requires a well-established aquarium with plenty of live rock for grazing and hiding. They are herbivores and will spend their day picking at algae on the rockwork. While generally peaceful towards other fish, they can be territorial towards other tangs, especially those of similar size and shape.
The Atlantic Blue Tang is considered an advanced care level fish. They are susceptible to marine ich and require excellent water quality and a varied diet to thrive. Their diet should consist primarily of marine algae, offered through dried seaweed sheets, spirulina flakes, and high-quality herbivore pellets. Supplementing with occasional meaty foods is also beneficial. They can reach a maximum size of around 15 inches in captivity.