What is the most expensive tuna ever sold?

Have you ever wondered about the extraordinary value of certain culinary delights? Well, let me ask you this: What is the most expensive tuna ever sold? Imagine a fish that fetches a price tag so astonishing, it borders on the realm of fantasy. Is it a rare breed, caught in the depths of the ocean? Or perhaps it's the size and perfection that drives up the cost? As a connoisseur of finance and the exotic world of luxury, I'm sure you're intrigued to know the answer. So, tell me, what do you think is the most expensive tuna ever sold, and what factors might have contributed to its astronomical price?