According to Official Guinness Records,
The most expensive tuna fish sold at an auction was a bluefin tuna sold at a price of 155,400,000 Yen ($1,767,370;£1,100,490) to Sushizanmai of Kiyomura Corporation (Japan) at the annual first fish auction of the year at Tsukiji fish market in Chuo, Tokyo, Japan, on 5 January 2013. It was caught in Oma, Aomori, Japan, and it weighed 222 kg (489 lb 6.88 oz).
For a complete list of 2013 records, please visit 2013 Guinness Records in Japan.