Fish and Seafood During Pregnancy: FDA/EPA Categories

Choosing seafood during pregnancy involves two separate checks: the fish species and the way the food is prepared and stored. A lower-mercury category does not make raw seafood a recommended pregnancy food, and cooking does not remove mercury. The FDA/EPA fish advice and FDA seafood-handling guidance address these different questions.

For U.S. adults who are or might become pregnant or are breastfeeding, FDA/EPA advise two to three four-ounce servings each week from “Best Choices,” or one serving from “Good Choices” with no other fish that week. Four ounces is measured before cooking. FDA/EPA questions and answers.

Fish supplies useful nutrients, but avoiding it is not automatically a diagnosis of deficiency or harm to a baby. The same FDA guidance says nutrient needs can be met through other foods. This guide explains the seafood choices without presenting fish as compulsory, a nutrient table as a prescription, or a preparation rule as a guarantee against illness.

🐟 The FDA Categories: How Fish Safety Actually Works

The chart's categories concern mercury. They do not certify the hygiene of a particular restaurant, the storage history of a package, or a person's allergy suitability. Use the category together with cooking and handling guidance.

Sources: FDA/EPA chart text for exact species and FDA/EPA chart instructions for servings. There are seven avoid-list entries, not four. The geographic qualifier on tilefish matters; Atlantic Ocean tilefish and Gulf of Mexico tilefish are in different categories.

Weekly servings count across seafood meals rather than starting again for each species or preparation. As arithmetic only, two four-ounce servings total eight ounces, and three total twelve. A fish meal, a tuna sandwich and a seafood roll should not each be treated as a separate allowance simply because they have different names.

UK advice is separately labelled later in this guide. Do not add a UK tuna allowance to a U.S. category allowance, or interpret whichever country's number is larger as an extra permission.

☠️ Why Mercury Matters, and What the Categories Mean

Methylmercury can harm the brain and nervous system with excessive exposure over time. Nearly all fish contain at least traces; larger fish that eat other fish and species that live longer tend to accumulate more. These are the explanations in the FDA/EPA mercury questions.

That general pattern does not let you classify every small fish as low mercury or every bottom-dwelling species as appropriate. Use the actual chart entry. Nor does a historical average in parts per million measure the concentration in the fillet you bought. This guide does not assign an individual exposure dose from generic species averages.

Cleaning and cooking do not reduce the mercury distributed through fish tissue. Removing skin or cooking for longer therefore does not turn an avoid-list species into a Best Choice. FDA/EPA, contaminants question 4.

For fish caught by you, family or friends, check the advisory for the actual water body. Local contamination information can differ from the commercial-fish chart. The FDA/EPA guidance discusses local health, fish and game agencies and advises a separate restriction when no advisory is available; use that section rather than assuming a supermarket species category clears an unmonitored catch. FDA/EPA, fish caught by family and friends.

If you have eaten a fish from the avoid list, FDA advises choosing lower-mercury fish going forward. That population advice should not be rewritten as either a prediction of injury from one meal or a personal guarantee of zero risk. Ask your provider about repeated exposures or a specific concern, with the species, portion and dates available.

🦐 Shrimp and Prawns

Shrimp appears in the FDA/EPA Best Choices list. The name establishes its chart category; it does not remove the need for cooking and handling. Raw or undercooked seafood, including ceviche, is a riskier pregnancy choice in CDC guidance.

For shrimp and other shellfish, FDA describes cooked flesh as firm, pearly and opaque. A curved shape alone is not the listed cooking endpoint. Most seafood should reach an internal temperature of 145°F under the FDA seafood guidance. Check the thickest part appropriately rather than treating a pink exterior or a particular curl as a safety certificate.

UK readers should note the current NHS seafood guidance: cooked prawns are listed among foods that can be eaten, but cold, precooked, ready-to-eat prawns must be cooked until steaming hot. That specific UK instruction should not disappear inside a blanket statement that all precooked seafood is ready to eat during pregnancy.

For a supermarket product, distinguish raw frozen shrimp, cooked refrigerated prawns and a prepared salad. Read the preparation and storage directions for the actual item. A familiar ingredient name does not tell you whether the whole product is raw, ready to eat, or intended for reheating.

A separate allergy concern needs separate advice. This guide does not recommend trying shellfish to prevent a baby's allergy or override an existing allergy plan. Mercury categories are not allergy recommendations, and the earlier generic shrimp nutrient and cholesterol claims are not used as personal dietary clearance.

🦀 Crab and Lobster

Crab and American/spiny lobster are Best Choices in the FDA/EPA chart. Fully cooked preparation still matters. FDA describes shrimp, scallop, crab and lobster flesh as becoming firm, pearly and opaque during cooking. FDA preparation guidance.

The article does not use a red shell alone to establish that lobster meat is adequately cooked. It also does not attach generic mercury measurements, zinc amounts or vitamin B12 amounts to every crab serving. Species, product and portion descriptions must be precise before a numerical food-composition claim is useful.

“Imitation crab” needs a product check rather than an automatic safety verdict. Find out what fish it contains, whether it is ready to eat or requires cooking, and what its label says about storage. The word “imitation” does not establish a particular manufacturing process for every product sold under that description.

A sushi roll containing cooked crab can still include raw fish, raw toppings or other ingredients requiring separate checks. The CDC seafood table distinguishes raw seafood from cooked choices; it does not approve every mixed dish that contains one cooked ingredient.

When ordering, useful questions are whether the seafood is cooked, whether another raw seafood ingredient is included, and whether the product needs refrigeration or heating. Those questions help identify the relevant guidance without claiming that a restaurant's reputation guarantees a particular meal's safety.

🐠 Everyday White Fish: Cod, Tilapia, Catfish

Cod, tilapia and catfish are Best Choices in the FDA/EPA chart. Pollock and haddock are also in that category. These are named entries, not a rule that every fish with white flesh has the same mercury profile.

For fish, CDC pregnancy guidance gives a cooking endpoint of 145°F or flesh that is opaque and separates easily with a fork. Raw fish is a riskier choice. A breaded exterior, browned surface or frozen package does not independently establish the cooking status of the middle.

In particular, do not assume every fish stick or breaded fillet is fully cooked during manufacturing. Follow the actual product's preparation directions. The dish may need cooking rather than merely warming; its appearance and familiar name do not replace that instruction.

When comparing nutrient information, compare like portions and products. A label for a breaded item is information about that prepared food, not a nutrient measurement for every plain fillet of the species. This guide does not publish an unsupported universal protein value for a three-ounce serving of cod, tilapia or catfish.

For self-caught catfish or other local fish, the water-body advisory remains important even when the species is listed among commercial Best Choices. Use the FDA/EPA local-catch guidance rather than ignoring location because the fish name is familiar.

🐟 The DHA Powerhouses: Salmon and Sardines

Salmon and sardines are Best Choices in the FDA/EPA chart. NIH describes fatty fish as sources of long-chain omega-3 fatty acids, while also explaining that food composition varies. NIH omega-3 fact sheet, food sources.

Here are precisely described examples from NIH Table 2, rather than generic values for every product:

Source: NIH Table 2. DHA and EPA are separate columns. For the specified sardine record, 0.74 g DHA equals 740 mg by unit conversion; it is not a value guaranteed for every tin or every serving size. These composition examples use three ounces, whereas the FDA adult fish-serving reference uses four ounces before cooking.

The NIH reference-intake section states that its age-one-and-older omega-3 adequate intakes apply to ALA, and that the Institute of Medicine did not establish a specific EPA or DHA intake recommendation. This guide therefore does not label a sardine serving as “two to three times the daily DHA minimum” or turn a food table into a supplement dose. NIH recommended intakes.

⚠️ Mackerel: The Species Trap

“Mackerel” is not a sufficiently precise name for applying the FDA/EPA chart. Its text version lists Atlantic mackerel and Pacific chub mackerel as Best Choices, Spanish mackerel as a Good Choice, and king mackerel as a Choice to Avoid.

Those entries have different consequences for the week. A Spanish mackerel serving uses the Good Choice option with no other fish that week; king mackerel should be avoided. An Atlantic mackerel entry should not be transferred to a product that is only labelled “mackerel” without knowing the species.

Ask the seller or restaurant for the actual species. If it cannot be established, this guide cannot assign the product a chart category. That is an information limit, not a claim that every unidentified fish has a particular mercury concentration.

The earlier claim that Atlantic mackerel provides more than 1,000 mg DHA in a generic serving is not retained. DHA and EPA must not be combined and then labelled DHA. A nutrient number also needs a defined food record and serving, rather than a fish name alone.

🔥 Smoked Salmon: Hot vs Cold

Do not use “hot-smoked” as automatic clearance for a refrigerated product. The FDA's pregnancy guidance says to avoid refrigerated smoked seafood except in a cooked recipe, such as a casserole. Canned or shelf-stable smoked seafood is a separate acceptable category.

The CDC table makes the same preparation distinction. Its examples of refrigerated smoked labels include nova-style, lox, kippered, smoked and jerky. A description of the smoking process does not override that product-category advice.

For UK readers, NHS guidance says cold-smoked and cured fish must be cooked until steaming hot. This is separately attributed guidance, rather than an instruction to combine a UK wording with an invented U.S. temperature for every smoked product.

Check whether the package requires refrigeration before opening and how it is meant to be prepared. Once opened, follow its storage instructions. A shelf-stable category before opening is not permission to leave an opened perishable food unrefrigerated indefinitely.

The texture of a smoked slice is not a substitute for these checks. Flaky-looking fish is not proof of its storage history, and a silky-looking product should not be classified solely from a photograph.

🦪 Oysters and Raw Shellfish

Oysters and clams appear as Best Choices in the FDA/EPA mercury chart. That category does not make raw oysters an appropriate pregnancy preparation. FDA advises pregnant people to avoid raw or undercooked seafood, including raw oysters even when treated after harvest. FDA at-risk-group advice.

For clams, mussels and oysters cooked in their shells, FDA says the shells should open during cooking; discard those that do not. Its guidance provides different cooking observations for other shellfish. Do not replace those distinctions with a universal rule about shell colour.

Mussels are a useful example of a chart limitation: the FDA/EPA FAQ says some species, including mussels, are absent because there was insufficient reliable mercury data for inclusion. This guide does not invent a Best Choice entry for an unlisted species. Cooking advice and a mercury-category assignment remain separate questions. FDA/EPA chart FAQ.

Freezing is also not universal clearance for raw seafood. FDA explains that freezing can kill parasites but does not kill all harmful germs. Our sushi guide discusses raw and cooked ingredients without treating previous freezing as a pregnancy exception.

🍣 What About Tuna?

Canned light tuna, including skipjack, is a Best Choice; albacore/white and yellowfin tuna are Good Choices; bigeye is a Choice to Avoid. These distinctions are in the FDA/EPA chart.

An albacore serving is not an extra serving alongside the usual Best Choice allowance. FDA/EPA's Good Choice option is one serving with no other fish that week. Read the species and product description rather than relying on “tuna” alone. FDA/EPA tuna questions.

UK NHS advice separately limits tuna to four cans or two steaks weekly and oily fish to two portions weekly. That is not an additional allowance to combine with the U.S. chart. NHS fish guidance.

Our tuna guide explains these categories and why cans are not a universal portion size. Raw tuna preparation still needs the raw-seafood pregnancy advice even when the mercury category has been identified.

🌡️ Cooking Seafood Safely

Plan handling as well as the final cooking step. FDA guidance says seafood to be used within two days after purchase should be stored at 40°F or below; otherwise freeze it. The two-day wording is after purchase, not a fresh clock automatically starting whenever you thaw it.

Thaw gradually in the refrigerator. FDA also describes sealed-bag cold-water thawing, or microwave defrosting when cooking immediately afterward. Keep raw seafood away from ready-to-eat food, wash hands with soap and warm water for at least 20 seconds after handling raw food, and wash utensils and preparation surfaces with soap and hot water between raw and cooked foods. FDA storage and preparation sections.

For fish, CDC gives 145°F or opaque flesh that separates easily with a fork. For shellfish, use the appropriate opened-shell or pearly/white opaque-flesh endpoint. Canned seafood and shelf-stable smoked products are distinct from refrigerated smoked seafood, and not every product described as precooked has the same pregnancy advice. CDC seafood table.

FDA says not to leave perishable seafood unrefrigerated for more than two hours, or more than one hour above 90°F. Prompt refrigeration matters after cooking too. Follow product-specific instructions rather than relying on an unsupported universal leftover lifespan. FDA serving guidance.

If you suspect foodborne illness during pregnancy, contact your healthcare provider immediately, as FDA advises. A category table or a claim that food was cooked cannot evaluate symptoms or certify an individual exposure.

❓ Frequently Asked Questions

How much fish can I eat during pregnancy?

U.S. FDA/EPA adult advice is two to three Best Choice servings weekly, typically four ounces before cooking, or one Good Choice serving with no other fish that week. Species and preparation both matter. FDA/EPA FAQ.

Which fish should I avoid completely during pregnancy?

The U.S. chart lists seven: king mackerel, marlin, orange roughy, shark, swordfish, Gulf of Mexico tilefish and bigeye tuna. Atlantic Ocean tilefish has a different category. FDA/EPA chart.

Is shrimp safe during pregnancy?

Shrimp is a Best Choice for mercury; raw or undercooked preparation is riskier. Cook appropriately and follow storage instructions. FDA/EPA chart, CDC seafood guidance.

Can I eat crab and lobster while pregnant?

Crab and American/spiny lobster are Best Choices. FDA describes cooked flesh as firm, pearly and opaque; the category does not approve raw preparation or every mixed dish. FDA chart, FDA cooking guidance.

Is canned tuna safe during pregnancy?

Identify the type: canned light is a Best Choice; albacore/white is a Good Choice with one serving and no other fish that week. Count it within the seafood allowance. FDA/EPA FAQ.

Are sardines safe during pregnancy?

Sardines are a Best Choice. Canned seafood is listed as a safer preparation in CDC guidance. Follow the specific package's opening and storage instructions; nutrient values depend on the product and portion. FDA/EPA chart, CDC.

Can I eat smoked salmon when pregnant?

U.S. advice avoids refrigerated smoked seafood except in a cooked dish; canned or shelf-stable smoked seafood is a separate category. “Hot-smoked” alone is not automatic clearance for a refrigerated product. FDA.

Is Atlantic mackerel the same as king mackerel?

No. Atlantic mackerel is a Best Choice and king mackerel is a Choice to Avoid in the U.S. chart. Spanish mackerel is a Good Choice. Identify the species. FDA/EPA chart.

Can I eat oysters while pregnant?

Avoid raw or undercooked oysters during pregnancy, including post-harvest-treated raw oysters. For shell-on cooking, discard oysters whose shells do not open. Cooking guidance is not a guarantee against every possible contamination. FDA.

Is farmed fish as safe as wild-caught during pregnancy?

Those labels alone do not establish safety. Use the species category, preparation and storage guidance, and local advisories for self-caught fish. This guide does not certify every farmed or wild product as equivalent. FDA/EPA FAQ.

Why does DHA matter so much in pregnancy?

FDA identifies DHA and EPA among fish nutrients supporting brain development. Its fish recommendation cites moderate evidence of possible cognitive benefit, not a guaranteed outcome or a DHA supplement prescription. Other foods can help meet nutrient needs. FDA/EPA nutrient FAQ.

Sources

1. FDA/EPA: Advice about eating fish and complete category text
2. FDA/EPA: Questions and answers on portions, mercury, nutrients and local catch
3. FDA: Selecting and serving fresh and frozen seafood
4. CDC: Safer food choices for pregnancy
5. NHS: Foods to avoid during pregnancy, UK guidance
6. NIH Office of Dietary Supplements: Omega-3 fatty acids

This guide is for informational purposes and does not replace advice from your healthcare provider. Mercury guidance and fish advisories can vary by region and local waterway, so check local advisories for locally caught fish.

Related guides:

• Salmon During Pregnancy
• Tuna During Pregnancy
• Sushi and Raw Fish During Pregnancy
• Pregnancy Safe Food Checker