The wholesale price of frozen bigeye tuna blocks at Tsukiji in Tokyo has been rising. Indian Ocean bigeye was priced at about JPY 910 (USD 9.16, EUR 6) per kilogram (kg) in September, compared with just over JPY 800 (USD 7.70, EUR 5.60) per kg in March.

Frozen bigeye tuna blocks are the main tuna item used for sashimi, having taken the place of bluefin over the last few years. Bigeye has a brighter flesh and is sweeter than bluefin.

The price was likely to rise further in advance of holiday de…

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