Speaking of Bluefin tuna, a food writer who has been to the major fish market in Japan informs me that the first Bluefin tuna of the year is sold at auction and can demand the equivalent of hundreds of thousands of dollars for the pride of having bought it. Further, it is the only fish I know of that is warm-blooded. I'm not sure how that distinction is confirmed, but so it is.
On the ketchup front, when in Hong Kong in the early 1970's when it was still a British Crown Colony, I found that whatever I ordered at a restaurant, they immediately bought me a big bottle of U.S. ketchup. For years I thought this was a sort of despair, assuming that all Americans wanted ketchup with everything, but I later learned that many Asian countries are crazy about our ketchup and think it is only good hospitality to get it on the table immediately.