Well, we all know fish as a rich source of vitamins and minerals, but this time we are going to talk about a bluefin tuna which has made news for being sold for a record of 510 million yen, which is ...

Kiyoshi Kimura, owner of the sushi chain, has a long history of expensive fish purchases Yuichi YAMAZAKI / AFP via Getty A Japanese sushi chain bought a 535-pound bluefin tuna for more than $3 million ...