Balistoides viridescens, commonly known as the Clown Triggerfish, is a visually captivating species prized for its bold patterns and colours. This small variant is suitable for marine aquarium enthusiasts with some experience, given its specific care needs and temperament.
Care Level: Moderate to advanced. This species requires stable water parameters and a well-maintained environment.
Temperament: Semi-aggressive. The Clown Triggerfish can be territorial and may show aggression towards smaller or more passive tankmates. It is best housed with robust, similarly sized fish.
Diet: Carnivorous. Feed a varied diet including meaty foods such as crustaceans, molluscs, and high-quality frozen or prepared marine fish foods to ensure optimal health.
Minimum Tank Size: At least 250 litres (approximately 65 gallons) to provide ample swimming space and territory.
Reef Safe: No. This species is known to nip at invertebrates and corals, making it unsuitable for reef aquaria.
Lighting Requirements: Standard marine aquarium lighting is sufficient; no special lighting needs.
Water Flow: Moderate water flow mimicking natural reef currents is recommended.
Placement: Provide plenty of hiding places using live rock structures to reduce stress and establish territory.
Origin: Indo-Pacific region, including coral reefs around Indonesia and the Philippines.
Maximum Size: Up to 50 cm (20 inches) in captivity, though the small variant will be smaller initially.
Overall, the Clown Triggerfish is a stunning addition to a suitably sized marine aquarium but requires careful consideration regarding tankmates and environment to thrive.

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