Fugu

The fugu in Japanese, bogeo (복어; -魚) or bok (복) in Korean, and hétún (河豚; 河魨) in Standard Modern Chinese[a] is a pufferfish, normally of the genus Takifugu, Lagocephalus, or Sphoeroides, or a porcupinefish of the genus Diodon, or a dish prepared from these fish. Fugu possesses a potentially fatal poison known as tetrodotoxin, therefore necessitating meticulous preparation to eliminate poisonous components and prevent the fish meat from being contaminated. The restaurant preparation of fugu is strictly controlled by law in Japan, Korea and several other countries, and only chefs who have qualified after three or more years of rigorous training are allowed to prepare the fish. Domestic preparation occasionally leads to accidental death.

Source: Wikipedia