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Concept
Fugu
Summary
The fugu (河豚; 鰒; フグ) in Japanese, bogeo (복어; -魚) or bok (복) in Korean, and hétún (河豚; 河魨) in Standard Modern Chinese 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 can be lethally poisonous to humans due to its tetrodotoxin, meaning it must be carefully prepared to remove toxic parts and to avoid contaminating the meat.
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.
Fugu is served as sashimi and nabemono. The liver was served as a traditional dish named fugu-kimo, being widely thought to be a tasty part, but it is also the most poisonous, and serving this organ in restaurants was banned in Japan in 1984. Fugu has become one of the most celebrated dishes in Japanese and Korean cuisine.
Tetraodontidae
There are close to 200 species in the family Tetraodontidae (pufferfish), a family of primarily marine and estuarine fish of the order Tetraodontiformes. However, only some of them are eaten and traded as "fugu".
Fugu contains lethal amounts of the poison tetrodotoxin in its organs, especially the liver, the ovaries, eyes, and skin. The poison, a sodium channel blocker, paralyzes the muscles while the victim stays fully conscious; the poisoned victim is unable to breathe, and eventually dies from asphyxiation. There is no known antidote for fugu poison. The standard treatment is to support the respiratory and circulatory systems until the poison is metabolized and excreted by the victim's body.
Researchers have determined that a fugu's tetrodotoxin comes from eating other animals infested with tetrodotoxin-laden bacteria, to which the fish develops insensitivity over time. Whether tetrodotoxin is sequestered from or produced by symbiotic bacteria is still debated.
Official source
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