For instance, tropical saltwater pufferfish, such as the Red-Eyed Puffer (Carinotetraodon lorteti), prefer warm waters with temperatures between 78°F and 86°F (26°C and 30°C). On the other hand, freshwater pufferfish species, such as the South American Puffer (Colomesus asellus), can adapt to cooler temperatures ranging from 68°F to 82°F (20°C to 28°C).
It is important to note that when keeping pufferfish in aquariums, maintaining the appropriate water temperature is crucial for their well-being and survival. Sudden changes in temperature or keeping the water too cold or too hot can stress the fish, leading to health problems or even death. It's always recommended to research the specific temperature requirements of the particular pufferfish species you're keeping to ensure optimal living conditions.