They were selected from 100 tuna fish caught and preserved using Japan’s advanced fishing technology by Japan's Kato Office firm and Binh Dinh fishery joint stock company (Bidifisco) on January 31. 

The tuna fish will be shipped to Japan by air.

Earlier in August last year, 9 tuna fish caught by Binh Dinh fishermen were auctioned off to the highest bidder for VND220,000 (US$11) a kilogram at the Osaka central wholesale market.