Every year first auction at Tokyo's sprawling Tsukiji fish market fetches an exorbitant prices for a single tuna fish and makes it to the headlines across across the globe. Inspired by the $117,000 tuna fish which was auctioned yesterday , here is the list of such tuna fish whose net worth is many times more than that of an average american household including that one fish which costed $1.7 million.Imagine the list of all things you can do with $1.7 million in hand. This man Kiyoshi Kimura, decided to buy a fish. He is the president of Kiyomura Co, which operates the Sushi-Zanmai restaurant chain. The man reportedly said "the price was a bit high," but that he wanted to "encourage Japan," according to Kyodo News agency.Kiyoshi Kimura again, this time he wanted to "liven up Japan" and help it recover from preceding year's devastating tsunami and economic stagnation according to media reports. The unsuspecting tuna, caught off Aomori prefecture weighed 269-kilogram(593-pound). That’s $1,238 per pound.The first auction of 2011 fetched $396,000 for a 342 kilogram(754-pound) tuna caught off Japan's northern island of Hokkaido.Sushi Zanmai, a Japanese restaurant chain, paid $117,000 for a 441-pound bluefin tuna. That’s $265 per pound. By the way the owner of this restaurant chain again happens to be Kiyoshi Kimura.Its to be noted that Japan is the world's biggest consumer of seafood, with Japanese eating 80 percent of the Atlantic and Pacific bluefins caught. Environmentalists warn that stocks of tuna are being depleted worldwide as a result of overfishing. Some tuna species such as the southern bluefin tuna have been reduced dangerously close to the point of extinction.A critic wrote in his blog explaining why people spend such a huge amount to own fish “Only reason any bidder at the Tokyo auction ever pays that much for a fish is to deliberately spend way more than any sane person should. Blowing that much on a tuna is either a celebration of recent profits, or a bid for publicity to boost a restaurant or distributor’s profile. In short, it’s money spent on advertising, not on fish. And clearly, while very expensive, it’s a technique that works.”