Are Spotted Puffer Fish Freshwater?

Are Spotted Puffer Fish Freshwater? They can endure a freshwater habitat as a youngster. They need a brackish marine environment to thrive as they grow older. To ensure health and long life, juvenile Green Spotted Puffers should have salinity levels of 1.005-1.008. The adults should have salinity levels of 1.018-1.022.. Can you keep a green