The U.S. Environmental Protection Agency offers these guidelines:
- Avoid eating fish that contain high levels of mercury, including swordfish, shark, king mackerel and tilefish.
- It's OK to eat up to 12 ounces per week of low-mercury fish and shellfish -- including shrimp, salmon, canned light tuna, pollock and catfish.
- Albacore tuna and tuna steak have more mercury than canned light tuna, so don't eat more than 6 ounces of albacore or tuna steak per week.
- Before you eat any fish caught locally, be aware of any advisories about the safety of local fish.