Clown Tang - Acanthurus lineatus
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The Clown Tang (Acanthurus lineatus), also known as the Lined Surgeonfish or Striped Surgeonfish, is a striking and highly active reef fish celebrated for its vibrant blue, yellow, and black stripes. Known for its grazing habits and bold personality, this tang adds both color and movement to large marine aquariums.
Common Name: Clown Tang (Lined Surgeonfish, Striped Surgeonfish)
Scientific Name: Acanthurus lineatus
Family: Acanthuridae
Size: Up to 12 inches (30 cm)
Temperament: Semi-aggressive
Difficulty: Moderate
Reef Safe: Yes
Native Region: Found throughout the Indo-Pacific, including Indonesia, the Philippines, and the Great Barrier Reef, typically inhabiting outer reef slopes and lagoon areas with strong water flow.
Tank Size: Minimum of 125 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Live rock aquascape with open swimming areas; provide ample grazing surfaces and robust rock structures.
• Algae Grazing: Actively feeds on filamentous and macroalgae, helping control unwanted growth.
• Behavior: Semi-aggressive, particularly toward other tangs; provide plenty of space to reduce territorial disputes.
• Diet: Herbivorous—supplement natural grazing with spirulina-based flakes, marine algae sheets, and herbivore pellets.
• Tankmates: Compatible with peaceful to semi-aggressive fish; avoid overcrowding with other tangs to prevent stress and aggression.