If you’re concerned about mercury, ask which type of mackerel the restaurant serves.
### What to choose instead
Atlantic mackerel is generally a different story and can be a nutritious choice when appropriately sourced.
Salmon and sardines are also excellent alternatives if you’re specifically looking for omega-3-rich seafood.
## 4. Tilefish
Tilefish has a mild flavor and firm texture, which can make it attractive to restaurant chefs.
But “tilefish” is another name that requires caution because mercury levels can vary substantially depending on where the fish was caught.
Certain tilefish from the Gulf of Mexico have historically been associated with particularly high mercury levels.
That doesn’t mean every fish labeled tilefish is identical.
Geographic origin matters.
This is a good reminder that seafood safety isn’t always as simple as memorizing a list of species.
### What to choose instead
Ask the restaurant where its tilefish was caught.
If the answer isn’t clear, choose a lower-mercury option such as salmon, trout, cod, or haddock.
