Blue Face Koi Tang (4–5")
Transform Your Tank with a Tang That Turns Heads for All the Right Reasons
Looking for a tang with genuine visual distinction? The Blue Face Koi Tang (Acanthurus japonicus) is a standout in the Acanthurus family — its deep, richly patterned body is complemented by a striking blue-white facial mask and vibrant orange and yellow accents near the tail, giving it the layered, multicolor appearance that earned it the "Koi" name in the reef community. At 4–5" it's in the ideal acquisition size — large enough to be established and hardy, young enough to acclimate smoothly and settle into your system without issue.
This is an active, eye-catching tang that brings constant movement and color to a reef tank. It's reef safe and generally peaceful with non-tang tankmates, though like most tangs it can be territorial with similar species. Feed a nori-heavy diet to maintain its vivid coloration and it will reward you with years of striking, high-energy presence in your saltwater aquarium.
Quick Stats & Care Guide
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Common Name: Blue Face Koi Tang
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Scientific Name: Acanthurus japonicus
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Current Size: 4–5"
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Care Level: Intermediate
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Temperament: Semi-aggressive (territorial with other tangs)
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Diet: Primarily herbivorous — nori, algae, spirulina; supplement with mysis and pellets
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Reef Safe: Yes
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Minimum Tank Size: 125 gallons
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Water Conditions: Temp 74–80°F | Sal 1.020–1.025 | pH 8.1–8.4 | High flow | High oxygenation
Why Buy From The Coral Boutique?
Every specimen we ship has been quarantined, conditioned, and eating before it leaves our facility. Tangs are susceptible to stress in transit — ours arrive acclimated and stable, ready to explore their new home from day one.
