At Tokyo’s Tsukiji Market on 29 May, fresh domestic bluefin tuna sold at an average price of JPY 1,980 (USD 20, EUR 15) for Niigata Prefecture product, a couple notches down from the same period last year.

Annually near the start of summer bluefin tuna migrate north along the Japanese archipelago, with the majority on the Sea of Japan side. This year, after a couple of years of reduced fishing effort on the Pacific Ocean side of the Sanriku coast (Honshu Island) following the earthquake and tsu…