How does a puffer fish maintain body temperature?

Pufferfish, like other fish, are ectothermic, meaning they rely on the surrounding water to regulate their body temperature rather than maintaining a constant internal temperature. They inhabit various environments, from tropical to temperate waters, which influence their metabolic rates. While they do not actively regulate their body temperature, they can adjust their behavior, such as seeking warmer or cooler waters, to help manage their physiological needs.