This type of fish is more of a delicacy, but it is common in both the Western and Eastern diets. This type of fish contains a poison that has the ability to kill someone in a matter of minutes. In fact, it is so deadly that there are laws making it illegal for the Emperor of Japan to eat this type of fish. Those who prepare this fish must spend two to three years in training learning how to prepare it safely. Of all of the apprentices who take the test at the end of the training, only about 30 percent pass, so if you want to indulge in this fish, be careful about who prepares it.