Diodon nicthemerus, commonly known as the Temperate Water Pufferfish, is a fascinating species prized for its unique appearance and defensive inflation behaviour. Native to temperate marine environments, this large pufferfish can reach a considerable size, making it suitable only for well-established, spacious aquaria.
Care Level: Moderate to advanced. This species requires stable water parameters and a carefully managed diet to thrive.
Temperament and Compatibility: Generally peaceful but can be territorial. It is best kept singly or with robust tankmates that are not small enough to be seen as prey. Avoid housing with very small or delicate fish.
Diet: Carnivorous, requiring a varied diet including hard-shelled invertebrates such as molluscs and crustaceans to help wear down their continuously growing teeth. Supplement with frozen or live seafood.
Tank Requirements: A minimum tank size of 200 litres is recommended to provide ample swimming space and maintain water quality. Temperate water conditions should be maintained, with temperatures typically between 18-22°C.
Water Parameters: Stable salinity and good filtration are essential. Moderate water flow is preferred to mimic natural conditions.
Reef Safety: With Caution. While not typically aggressive towards corals, their diet and behaviour may pose risks in reef setups.
Placement: Provide plenty of hiding places and open swimming areas. Rockwork and caves are beneficial for security and enrichment.
Origin: Temperate marine waters (specific origin not provided).
Maximum Size: Large (exact maximum size not provided, but can exceed 30 cm).
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