Sharpnosed Puffer Pufferfishes are related to the porcupinefish, however, there are some distinct differences. One is the skin of the pufferfish, which are smooth, compared to spines on the porcupinefish. Their teeth are also different from those of the porcupinefish.
Pufferfishes have two teeth on both the upper and lower jaws.
Perhaps many of us have heard of the pufferfish because of stories of lethal poisoning after eating them. In Japan, pufferfish is a delicacy. This fish is prepared only in licensed restaurants. Pufferfishes inflate themselves by taking in amounts of water. This will make them bigger and probably too big for their would-be predators.