Shoppers Warned as Jack Mackerel Replaces Traditional Fish in Tins Amid Overfishing

Quick Brief
Shoppers purchasing tinned mackerel may find a different species inside their cans following recent industry changes. Consumer advocacy groups have criticized the swap, which comes as traditional stocks face an overfishing crisis.
What Happened?
Over the past year, major brands like Princes alongside several supermarket own-label products have quietly replaced traditional tinned mackerel fillets with jack mackerel. This alternative species shares a similar name but belongs to a different biological category, a shift driven by dwindling traditional fish populations and growing overfishing pressures.
Why It Matters
The unspoken substitution has triggered concerns from consumer advocacy organizations that everyday shoppers are being short-changed by receiving a different product than what they expect on the label.
Key Facts
- Consumer group Which? has criticized the undisclosed substitution of fish species.
- Major brands including Princes have swapped traditional mackerel for jack mackerel over the past year.
- Several supermarket own-label products are also affected by the change.
- The transition is driven by dwindling traditional stocks and ongoing overfishing concerns.
Compiled from 2 outlets
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