Gold Rimmed Whitecheek Tang - Acanthurus nigricans
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The Gold Rimmed Whitecheek Tang (Acanthurus nigricans) is a striking saltwater tang with a dark body, bright gold-rimmed fins, and prominent white cheek markings. This semi-aggressive surgeonfish adds bold color and dynamic movement to larger reef aquariums.
Common Name: Gold Rimmed Whitecheek Tang
Scientific Name: Acanthurus nigricans
Family: Acanthuridae
Size: Up to 10 inches (25 cm)
Temperament: Semi-aggressive
Difficulty: Moderate
Reef Safe: With caution
Native Region: Found throughout the Indo-Pacific, including Hawaii, Indonesia, and the Great Barrier Reef, typically inhabiting coral reef slopes and lagoon areas.
Tank Size: Minimum of 125 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate/Decor: Provide ample live rock for grazing on algae and open swimming areas.
• Diet: Herbivorous—feeds on algae; supplement with seaweed sheets or spirulina-based foods.
• Behavior: Semi-aggressive; may defend territory, particularly against other tangs.
• Tankmates: Best with peaceful, similarly sized fish; avoid smaller or slow-moving species.
• Reef Notes: Generally reef safe, but may occasionally nip at soft corals or sessile invertebrates.