


Species Profile
Powder Blue Tang
Acanthurus leucosternon
Tangssemi-aggressive
Adult size
9″
Minimum tank
125 gal
Temperature
75–82°F
pH
8.1–8.4
Schooling
Solitary OK
Water level
mid
Grows from juvenile
Typically sold at ~2.5″ and reaches 9″ over ~2 years. Plan tank size for the adult, not the fish at purchase.Diet
Marine algae sheets, seaweed, herbivore pellets
Notes
Pastel-blue body with a black face and yellow dorsal fin. Stunning but notoriously ich-prone and one of the more aggressive tangs, best for experienced keepers with large mature systems.
Compatible Tankmates
Best tank mates for Powder Blue Tang
Every species below passes the compatibility engine when paired with Powder Blue Tangin a suitably sized tank. Verdicts come from the same rules the builder uses — click a card to see that species' own care profile and its tank mates in turn.

Ocellaris Clownfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Blue-Green Chromis
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Royal Gramma
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Firefish Goby
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Percula Clownfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Maroon Clownfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Tomato Clownfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Yellowtail Damselfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Three-Stripe Damselfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Yellow Watchman Goby
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Diamond Watchman Goby
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.

Neon Goby
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Photo: H. Zell / Wikimedia Commons · Source · CC-BY-SA-3.0