Tuna is a bit of an oddball when it comes to fish. Typically, you can find relatively cheap fish (like white cod or shiny silver mackerel) or expensive fish (like swordfish, which has a meaty ...

Tuna is very low in calories and fat ... to limit tilapia to 2-3 servings a week. Cod is a cold-water fish with a delicious, flaky white meat. This fish is full of protein. It’s also low ...

In the UK, tuna and other large predatory fish the limit is 1.0 mg/kg, while for smaller species like cod, it is 0.5 mg/kg. In Europe, some of the smaller species have a limit of 0.3mg/kg.