The Arothron diadematus, commonly known as the masked pufferfish, is a captivating addition to any large marine aquarium. This species is notable for its distinctive facial markings and robust body shape, making it a standout specimen for experienced hobbyists.
Care Level: Moderate to advanced. Due to its size and specific care needs, this pufferfish is best suited for aquarists with some marine experience.
Temperament and Compatibility: Generally peaceful but can be territorial, especially with other puffers or slow-moving fish. It is advisable to keep this species singly or with robust tank mates that can tolerate its curious nature.
Diet: Carnivorous, requiring a varied diet including hard-shelled foods such as molluscs and crustaceans to help wear down its continuously growing teeth. Supplement with frozen or live seafood like shrimp, squid, and clams.
Tank Requirements: A minimum tank size of 200 litres is recommended to provide ample swimming space and maintain water quality. The aquarium should be well-established with plenty of hiding places and a secure lid, as puffers are known to be escape artists.
Water Parameters: Maintain stable marine conditions with a temperature range of 24-27°C, salinity of 1.020-1.025 SG, and moderate water flow.
Reef Safety: With Caution. While not typically aggressive towards corals, this species may nip at invertebrates or sessile animals, so caution is advised in reef setups.
Overall, the Arothron diadematus offers a unique and engaging experience for marine aquarium enthusiasts prepared to meet its care requirements.



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