There is one fish that is a delicacy in japan,,,they say it is highly poisonous and if you don't eat the right part of the fish or someone that is not knowledgeable enough to make it right it becomes instant death... I saw it on the Food channel but the name escapes me now... it's beyond me why peeps would take a chance dying for sushi...

looked it up,,,it's the organs of a Blowfish,,,LOLz...