🐠 Powder Blue Tang (Acanthurus leucosternon)
🐠 Powder Blue Tang (Acanthurus leucosternon)
Marine Reef-Safe Tang • Vivid Powder-Blue Body With Yellow Dorsal Fin • Genuinely High Disease Sensitivity — Please Read Before Buying
⚠️ Important Information — Please Read First
We want to be genuinely direct on this one. The Powder Blue Tang is widely regarded as one of the more disease-prone fish in the marine hobby, genuinely highly susceptible to marine ich and marine velvet, especially when stressed by shipping, new or immature tanks, or poor water quality. Many specimens entering the trade unfortunately don't survive long after purchase, largely due to this sensitivity combined with the genuinely long shipping distances from its Indian Ocean origin. A strict 2+ week quarantine period, an already mature and stable tank with established algae growth, excellent water quality, and choosing an actively swimming, robust-bodied, visibly eating specimen genuinely improve the odds significantly. Please speak with our team about the specific specimen you're considering, and we're glad to help set proper expectations before you purchase.
📋 The Powder Blue Tang (Acanthurus leucosternon), also known as the Powder-Blue Surgeonfish, is a genuinely striking species — a vivid powdery blue body, a bright yellow dorsal fin, and a bold black-and-white facial mask.
Native to the Indian Ocean, from East Africa and the Maldives to the Andaman Sea and Bali, this species inhabits clear, shallow reefs and lagoons with strong current.
This is a genuinely reef-safe, valuable algae grazer, but it's also genuinely territorial and can be aggressive toward its own species and other tangs, needing real swimming space and careful tank mate selection.
💙💛 Highlights
🎨 Vivid Powder-Blue Body: A genuinely iconic, widely recognisable tang
⚠️ Genuinely High Disease Sensitivity: Requires strict quarantine and an already mature tank
🌿 Genuinely Reef Safe: Won't harm corals or invertebrates
🥬 Valuable Algae Grazer: Genuinely effective at controlling nuisance algae
⚠️ Genuinely Territorial: Best as the only tang, especially avoiding similarly shaped species
🧾 A Quick Look at the Powder Blue Tang
📛 Common Name: Powder Blue Tang (Powder-Blue Surgeonfish)
🔬 Scientific Name: Acanthurus leucosternon
👨👩👧 Family: Acanthuridae
🌍 Origin: Indian Ocean (East Africa, Maldives, Andaman Sea, Bali)
📏 Max Size: Up to 23 cm (≈ 9")
🧂 Specific Gravity: 1.023–1.025
🌡️ Temperature Range: 24–28°C (75–82°F)
🧠 Care Level: Advanced — genuinely high disease sensitivity
💖 Temperament: Aggressive toward its own species and other tangs; peaceful toward unrelated fish
🌿 Reef Safe: ✅ Yes
🏠 Min Tank Size: 475 L (≈ 125 gallons)
📌 Tank Level: Mid Level, active swimmer
🧬 Stock Type: Wild-collected as standard stock
⏳ Lifespan: 10–15 years with excellent care
🍽️ Diet: Herbivore (algae, seaweed, vegetable matter, occasional meaty foods)
🐣 Reproduction: Egg Layer (pelagic spawner); not bred in home aquariums

















