The Arothron diadematus, commonly known as the masked pufferfish, is a captivating species prized for its unique pattern and engaging behaviour. This small-sized pufferfish is suitable for marine aquarium enthusiasts with some experience due to its specific care needs.
Temperament and Compatibility: Generally peaceful but can be territorial, especially towards other puffers or slow-moving fish. Best kept singly or with robust tank mates that are not easily intimidated.
Diet: Omnivorous with a preference for meaty foods such as molluscs, crustaceans, and prepared marine diets. Regular feeding of hard-shelled prey helps maintain dental health.
Tank Requirements: A minimum tank size of 150 litres is recommended to provide ample swimming space and territory. The aquarium should have plenty of hiding spots and a secure lid, as puffers are known jumpers.
Water Parameters: Stable marine conditions with temperature between 24-27°C, salinity of 1.020-1.025, and moderate water flow are ideal.
Reef Safety: With caution – may nip at invertebrates or corals, so not recommended for sensitive reef tanks.
Overall, the Arothron diadematus is a fascinating addition to a well-maintained marine aquarium, offering both visual appeal and interesting behaviour for dedicated hobbyists.



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