Waitrose is to suspend sales of mackerel products due to concerns about overfishing. The supermarket said it would stop sourcing fresh, chilled and frozen mackerel by 29 April, as well as tinned ...

Mackerel is higher in healthy fats, vitamin B12, and magnesium, while salmon is lower in calories and higher in potassium, niacin, and folate. Both salmon and mackerel are excellent sources of omega-3 ...