'Tuna King' laments Tsukiji market move

Kiyoshi Kimura's ear-to-ear grin is tough to miss in Japan - it's splashed across ubiquitous billboards advertising his nationwide sushi chain.

But the self-styled "Tuna King" isn't smiling about plans to move Tokyo's famous Tsukiji market, the world's biggest fish emporium, and warns that its unique identity is at risk of being destroyed.

Kimura's office is a block away from the historic site where in 2013 he famously slapped down a record $1.8 million bid at the traditional New Year bluefin tuna auction.