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?

1/15/2026
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (November 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (October 2025)
12/1/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (October 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (September 2025)
11/5/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (September 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (August 2025)
10/27/2025
The OPRT published its Newsletter International No. 90.
10/2/2025
Price of Tunas and Trend in the total stock of major tuna species in Japan (fresh and frozen) have been updated.
Price of Tunas (August 2025)
Trend in the total stock of major tuna species in Japan (frozen) (2 years, 5 years and 10 years) (July 2025)
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.