The Yellow Boxfish (Ostracion cubicus) is a captivating marine fish renowned for its distinctive cubic body shape and bright yellow colouring, often adorned with black spots. This Extra Large specimen is ideal for experienced aquarists with mature, well-established tanks.
Care Level: Moderate to Advanced. This species requires stable water conditions and careful monitoring due to its sensitivity and potential toxin release when stressed.
Temperament: Generally peaceful but can be shy. It is best kept singly or in very large tanks if multiple individuals are desired, as they may exhibit territorial behaviour.
Diet: Omnivorous. Feed a varied diet including high-quality marine pellets, frozen mysis shrimp, brine shrimp, and algae-based foods to ensure balanced nutrition.
Minimum Tank Size: 200 litres (approximately 50 gallons) or larger to provide ample swimming space and reduce stress.
Reef Safety: With Caution. While generally reef safe, the Yellow Boxfish can release toxins when stressed, which may harm other tank inhabitants.
Lighting Requirements: Standard marine aquarium lighting is sufficient.
Water Flow: Moderate water movement is preferred to mimic natural reef conditions without causing excessive stress.
Placement: Provide plenty of hiding spots with live rock and open swimming areas. Avoid aggressive tank mates to reduce stress.
Origin: Indo-Pacific region.
Maximum Size: Up to 45 cm (18 inches) in captivity.
FAQs
Q: Is the Yellow Boxfish suitable for reef tanks?
A: It can be kept in reef tanks with caution due to its potential toxin release when stressed.
Q: What should I feed my Yellow Boxfish?
A: A varied diet of marine pellets, frozen mysis, brine shrimp, and algae-based foods is recommended.
Q: Can I keep more than one Yellow Boxfish?
A: It is best to keep them singly or in very large tanks to avoid territorial disputes.



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