The difference in value of TUNA between JAPAN and EUROPE
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JAPAN
One simple word : Many people prefer WILD
WILD TUNA has no stability in quality (freshness, fat content, color).
This is compensated for by the tuna evaluation function carried out by people at the market.
There is a price based on the evaluation.
FARM TUNA is cheaper because there is a large supply.
EUROPE
One simple word : Many people prefer FARM
FARM TUNA has stability in quality (freshness, fat content, color).
Because it is farmed to ensure consistent quality.
Basically, there is no significant difference in quality between all the tuna.
A lot of WILD TUNA is landed in EUROPE.
It is poorly handled on board and therefore has low value.