The OPRT is an organization established to prevent the over-exploitation of tunas and utilize them in a sustainable manner.
Please support us so that people can continue to enjoy eating delicious tunas forever.
Click here for becoming a supporting member
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What's new?

9/3/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (July 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (June 2025)
8/1/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (June 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (May 2025)
7/1/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (May 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (April 2025)
6/20/2025
The OPRT adopted the Revision to OPRT Policy on Bycatch Issues at the General Meeting held on June 19.
6/2/2025
The OPRT published its Newsletter International No. 89.
MORE
About
Sustainable use of tunasHistory of the OPRT
and its activities.
About
Tuna long line fisheriesSummary of tuna longline fishing.
About TunasSpecies of tuna, living areas, nutrition, etc.
About the OPRTArticles of Association, Membership, business plan.
The OPRT is calling for supporting MembersPlease support us so that people can continue to enjoy eating delicious tunas forever.