1.8 million dollars the world’s most expensive fish was sold 2013 new year auction Japan: World's Most Expensive Fish Sold for $1.8 Million Bluefin Tuna for $1.8mil last year Japan: World’s Most Expensive Fish Sold for $1.8 Million Bluefin Tuna for $1.8mil last year 1.8 million dollars newsfeed.time.com Source Bluefin tuna $1.8 million spending some $ 1.8 Million