Atlantic Blue Tang - Acanthurus coeruleus
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The Atlantic Blue Tang (Acanthurus coeruleus) is a vibrant and active surgeonfish that shifts from a yellow juvenile phase to a rich, deep blue as an adult. Hardy, fast-swimming, and always in motion, it brings dynamic energy and bold color to large saltwater aquariums.
Common Name: Atlantic Blue Tang
Scientific Name: Acanthurus coeruleus
Family: Acanthuridae
Size: Up to 15 inches
Temperament: Semi-aggressive
Difficulty: Moderate
Reef Safe: Yes
Native Region: Western Atlantic & Caribbean
Tank Size: 180 gallons or larger
Temperature: 72–78°F (22–26°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Decor: Plenty of swimming room with rockwork for grazing and shelter.
• Requires a diet rich in marine algae and seaweed.
• Provide strong water movement and excellent filtration.
• Can be territorial toward other tangs, especially similar-shaped species.
• Benefits from regular nori sheets to support immune health and coloration.