The order Tetraodontiformes contains Porcupinefish, Triggerfish, Boxfish and the Pufferfish are almost entirely found in the tropics and subtropics. Only a small amount are found in fresh and brackish water and they all belong to the pufferfish family. One of the more common of the "rare fish" The Green puffer needs special care and should only be kept by the more advanced hobbyist. This fish is usually wrongly named Tetraodon fluviatilis.