Puffer fish

Tetraodontidae is a family of estuarine and marine fish originating from the order Tetraodontiformes. Morphologically, similar fish belonging to this family are similar to porcupine fish in that they have large, broad spines (unlike the larger spines of Tetraodontidae thin, hidden, and can be seen when the fish inflates itself). This scientific name refers to the four large teeth attached to the upper and lower jaws that are used to crush the shells of crustaceans and mollusks , their natural prey. The pufferfish is generally believed to be the second most poisonous vertebrate in the world after the golden poison frog . Internal organs such as the liver and sometimes the skin are very poisonous to some animals if eaten, but the flesh of some species of this fish is eaten in Japan (called 河豚, pronounced fugu ), Korea (called bok ), and China (called 河豚 he2 tun2 ) and prepared by cooks who know which parts of the body are safe to eat and in what amounts.