Atlantic Blue Tang

Atlantic Blue Tang

Acanthurus coeruleus

Also known as: Blue Caribbean Tang, Blue Tang Surgeonfish

🧂 Saltwater ⚡ Semi-aggressive 🟡 Moderate 🌿 Herbivore Reef Safe

Deep blue to purplish body as an adult. Juveniles are bright yellow, gradually transitioning through blue phases. A Caribbean species.

Tank Size

100 gal
minimum (150+ preferred)

Temperature

74–82°F
23–28°C

pH Range

8–8.4
water acidity

Max Size

15"
38.1 cm

Lifespan

12+ years
typical in captivity

Swim Level

All
preferred zone

Care Notes

Grows large and needs ample swimming space. The juvenile yellow-to-blue color change is dramatic. Quarantine recommended.

Feeding

Nori seaweed, marine algae, spirulina, pellets, and frozen mysis.

Compatible Tank Mates

None identified.

Use Caution With

Incompatible With

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