That tuna wasn’t actually tuna (Picture: Getty)

There’s a chance that your last tuna sushi roll contained no tuna at all.

A study has revealed that nearly two-thirds of tuna sold at restaurants and stores in the US is a completely different type of fish.

In fact, non-profit organisation Oceana found that 59 per cent of fish marketed as tuna was actually escolar.

And, alarmingly, this type of fish can lead to dangerous levels of diarrhoea because they feed on a fatty acid humans can’t digest.


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Cod and trout were among the other types of fish found in tuna cans.



Oceana ran tests on more than 1,200 tuna cans across the states.

The investigation found Southern California to be the worst offender with more than 50 per cent of tuna cans containing none at all.

Away from the supermarkets, sushi venues appear to be even worse. The study found that more than 70 per cent of venues mislabeled fish.

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