What type of fish is a dangerous delicacy for sushi eaters if not correctly prepared?

The dangerous delicacy for sushi eaters if not correctly prepared is Fugu, also known as Pufferfish.

Here's why:

* Tetrodotoxin: Fugu contains tetrodotoxin, a potent neurotoxin that can be fatal if ingested. It's estimated that just a few milligrams can be lethal.

* Highly Specialized Preparation: Only highly trained and licensed chefs are allowed to prepare fugu in Japan. They have to undergo years of rigorous training to learn the intricate methods of removing the poisonous organs and ensuring the fish is safe to eat.

* Risks: Even a tiny amount of tetrodotoxin can cause paralysis, respiratory failure, and death.

While the danger of fugu is well-known, it remains a sought-after delicacy in some cultures due to its unique taste and the thrill of its potential danger. However, it's crucial to only consume fugu from reputable restaurants with certified chefs.