Puffer Fish...

It's also called blowfish or fugu in Japanese.

They are the world's most toxic group of fish and their livers, ovaries and skin contain tetrodotoxin, 100 times more lethal than cyanide.

Yet eating the fish's flesh is a tradition in Japan, where wealthy diners play the Russian roulette of the restaurant world by dining on sashimi slivers so thin they are almost transparent.

However, since it has toxic, it's also poisonous.

Fugu can be lethally poisonous due to its tetrodotoxin therefore, it must be carefully prepared to remove toxic parts and to avoid contaminating the meat.

But since this blowfish is one of the top 10 most deadliest food in the world. The dish can only be prepared by professionals.

The restaurant preparation of fugu is strictly controlled by law in Japan and several other countries, and only chefs who have qualified after three or more years of rigorous training are allowed to prepare the fish. But if it's have been domestically prepared by someone who has no experience in making blowfish more or less the person has cooking experience...

...This will occasionally lead to accidental death...