The Top 10 Fish Species to Never Eat

Not every fish is ideal for seafood, varying in omega-3s, protein, & essential minerals. Some pose environmental, health or ethics issues.

Bluefin Tuna

Bluefin tuna, known for its buttery texture used in sushi, has been critically depleted due to overfishing. It also contains high levels of mercury and pollutants.

Atlantic Salmon

Atlantic salmon, a common choice in restaurants and supermarkets, is heavily farmed often using large amounts of antibiotics and pesticides, potentially harmful to the fish and consumers.


Swordfish, a large predatory fish, has high mercury levels leading to potential neurological issues. It's advised that pregnant women and children avoid consumption.

King Mackerel

King mackerel, popular in the US South, is high in mercury. Overeating may cause stomach, neurological problems. Pregnant women, children should limit consumption.

Chilean Sea Bass

Chilean sea bass, aka Patagonian toothfish, is almost extinct due to overfishing and pollution, resulting in high mercury and Polychlorinated biphenyls levels.

Orange Roughy

Orange roughy is an endangered, slow-growing fish that's been overfished. It’s high in mercury, may contain environmental toxins, making it a risky choice for consumption.


Shark meat, often served in restaurants, is available in specialty markets. However, overfishing and high mercury levels put sharks at risk.

Imported Catfish

Imported catfish is budget-friendly but often comes from countries with lax regulations, exposing consumers to high levels of antibiotics and pesticides.

Atlantic Halibut

Atlantic halibut is a large flatfish that has been overfished to near extinction. Due to pollution from industrial activities, it is also high in mercury and other pollutants.

Atlantic Cod

Atlantic cod, a commonly consumed fish, is endangered due to heavy fishing. It's also high in mercury and other pollutants due to industrial activities.

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