Fish Containing High Levels of Mercury

While fish is generally a healthy choice, some fish contain high levels of mercury and should only be eaten occasionally. Keep this handy list with you the next time you shop for seafood.

Best: Fish with Low Mercury Contamination

Wild Alaskan Salmon
Farmed Rainbow Trout
Albacore Tuna (U.S. and Canada)
Dungeness Crab
Mussels
Farmed Oysters
Farmed Clams
Catfish
Pacific Cod
Pacific Sardines
Farmed Shrimp (U.S.)

Mid-Range: Fish with Low to Medium Levels of Mercury Contamination

Pacific Flounder
Wild Clams
Maine Lobster
King Crab
Sea Scallops (U.S. and Canada)
Wild Shrimp (U.S.)
Tilapia
Canned Tuna
Yellowtail Snapper
Swordfish (U.S.)

Worst: Fish with High Levels of Mercury Contamination

Chilean Sea Bass
Grouper
Farmed Atlantic Salmon
Shark
Imported Swordfish
Imported Tuna
Imported Mahimahi
Atlantic Halibut
Octopus
Orange Roughy
Rockfish
Red Snapper
Sturgeon
Tilapia (Asia)