Japan's 'Tuna King' continues reign with $636,000 bluefin win

Japan's self-styled "Tuna King" has done it again - paying more than $600,000 for a single fish.

Sushi entrepreneur Kiyoshi Kimura paid top price at the first auction of the new year at Tokyo's Tsukiji fish market on Thursday, bagging a prized bluefin tuna for 74.2 million yen ($636,000).

The head of the Sushi Zanmai chain is now the proud - if temporary - owner of a 212-kilogram fish.