Kimura won the bid for the tuna caught off Oma, Aomori prefecture, northern Japan, with a 74 million yen (633,000 USD) at the fish market's first tuna auction this year.
Bluefin tuna are line during the New Year first auction at the Tsukiji fish market in Chuo Ward, Tokyo, Jan. 5, 2017.
It was Kimura's sixth-straight year of snagging the first fish on auction, a celebratory start to the New Year for the market, which is a popular destination for tourists.
About 80% of the Pacific and Atlantic bluefin tunas are consumed in Japan, and tunas that are particular suited for sashimi and sushi can command very high prices.
President of sushi restaurant chain Sushi-Zanmai, Kiyoshi Kimura (C), displays a 230kg bluefin tuna at his main restaurant near Tokyo's Tsukiji fish market on January 5, 2014.
The winning bid Thursday for the prized but imperilled species was the second highest ever after a record 155.4 million yen ($1.8 million) bid in 2013.
According to the World Wildlife Organization, Bluefin tuna are on the brink of extinction due to overfishing.
According to the Guardian, he said the fish was "a bit expensive, but I am happy that I was able to successfully win at auction a tuna of good shape and size".
He paid $614,000 for a 467-pound bluefin tuna.
However, Enticknap added that Japan is not the only culprit in hurting Pacific bluefin tuna, and a lack of coordination between different countries has led to overfishing the same vulnerable population.
Jamie Gibbon, officer for global tuna conservation at the Pew Charitable Trusts, told the Guardian that the Pacific Bluefin may not have much longer if fishing trends remain the same.
Pew and several environmental groups are calling for a ban on commercial fishing of bluefin tuna for at least two years because of overfishing.