Mackerel is no longer a sustainable choice for a fish supper and should be eaten only occasionally, conservationists have warned amid overfishing of the stock.
The Marine Conservation Society said it had removed mackerel, an oily fish packed with omega 3, from its latest "fish to eat" list.
Atlantic populations of mackerel have moved north-west into Icelandic and Faroe Islands waters, prompting their fishermen to fish more stock.
"The total catch is now far in excess of what has been scientifically recommended and previously agreed upon by all participating countries," said Bernadette Clarke of the Marine Conservation Society.
The conservation group said good alternatives to mackerel were herring and sardine.