Tilapia is one of the safest fish you can eat during pregnancy. The FDA and EPA jointly classify it as a “Best Choice” for pregnant and breastfeeding women, meaning you can safely eat two to three servings per week. Its mercury level averages just 0.01 parts per million, which is among the lowest of any commercially available fish.
Why Tilapia Ranks So Low in Mercury
Mercury accumulates as you move up the food chain. Large predatory fish like swordfish, shark, and king mackerel concentrate mercury from every smaller fish they eat over their lifetimes. Tilapia, by contrast, feeds primarily on algae and plant material, sits near the bottom of the food chain, and is typically harvested young. The result is a mercury concentration roughly 100 times lower than high-mercury species like swordfish, which averages around 0.99 ppm.
That 0.01 ppm reading puts tilapia in the same ultra-low range as shrimp, salmon, sardines, and catfish. Even eating the full recommended two to three servings a week, you would be nowhere near a concerning mercury exposure.
Nutritional Value for Pregnancy
Tilapia is a lean, high-protein fish. A 100-gram portion of farmed tilapia provides roughly 15 to 17 grams of protein and around 95 calories, making it an efficient source of the extra protein your body needs during pregnancy. Wild-caught and farmed tilapia have similar protein content (about 17% and 16%, respectively), though farmed tilapia tends to carry more fat and slightly more calories.
Where tilapia falls short compared to fattier fish is in omega-3 fatty acids. A 3-ounce cooked serving of farmed tilapia delivers less than 200 milligrams of EPA and DHA combined. For comparison, the same portion of canned or farmed salmon provides 1,000 to 1,500 milligrams. DHA is critical for fetal brain and eye development, so if tilapia is your primary fish, you may want to supplement your omega-3 intake through other sources like salmon, trout, sardines, or a prenatal supplement that contains DHA.
That said, eating tilapia is still better than eating no fish at all. It contributes some omega-3s, delivers quality protein, and provides minerals like iron at safe levels for consumption.
Farmed Tilapia and Antibiotic Concerns
Nearly all tilapia sold in grocery stores is farmed, and some people worry about antibiotic residues in aquaculture-raised fish. Studies have detected low levels of antibiotics like tetracycline and oxytetracycline in farmed tilapia samples, but concentrations consistently fall below the maximum residue limits set by the World Health Organization. In risk assessments, the hazard index for these antibiotic residues comes in well below one, the threshold that would indicate a health concern.
The FDA tests imported seafood for banned drug residues, and tilapia from major exporting countries undergoes screening. If you want extra reassurance, look for tilapia sourced from the United States, Canada, Ecuador, or Peru, or products carrying third-party certifications like the Aquaculture Stewardship Council (ASC) label. These tend to have stricter oversight on chemical use in fish farming.
How to Cook Tilapia Safely
Raw or undercooked fish poses a real risk during pregnancy because your immune system is partially suppressed, making you more vulnerable to bacteria and parasites. Cook tilapia to an internal temperature of 145°F (63°C). At that point, the flesh will no longer be translucent and should separate easily with a fork. Skip tilapia sushi, ceviche, or any preparation where the fish isn’t fully cooked through.
How Much You Can Eat Per Week
The FDA’s current guidance for pregnant women is to eat two to three servings of fish per week from the “Best Choices” category, and tilapia qualifies. One serving is about 4 ounces, roughly the size of the palm of your hand. That means 8 to 12 ounces of tilapia per week is within the safe range.
You can also mix and match with other low-mercury options in the same category: shrimp, salmon, pollock, catfish, sardines, trout, and scallops all qualify. Varying your fish intake gives you a broader nutrient profile, particularly more omega-3s from fattier choices like salmon or trout, while keeping mercury exposure minimal.