Can you eat chilean sea bass while pregnant?
In moderationYes, once a week is fine. The FDA puts Chilean sea bass in its "good choices" group, meaning one 4-ounce cooked serving per week keeps your mercury intake low.
Why
Chilean sea bass is a long-lived deep-water fish, so it carries more methylmercury than light tuna or salmon but far less than shark, swordfish, or king mackerel. Mercury crosses the placenta and can affect a baby's developing brain and nervous system, which is why the FDA sorts fish by mercury level rather than banning them, and lists Chilean sea bass among the fish to eat once a week instead of two to three times. Within that limit it is a genuinely good pregnancy food: high in protein, very high in omega-3 fats, and part of the 8 to 12 ounces of fish per week ACOG encourages. Make sure it is cooked through to 145F, since raw or lightly seared sea bass carries the same Listeria and parasite risk as any other undercooked fish.
Safer alternatives
- Atlantic or farmed salmon, 2 to 3 servings a week
- Black cod or sablefish
- Cod or haddock fillets
- Rainbow trout
- Canned light tuna
- Striped bass from the good-choices list
Sources
- FDA https://www.fda.gov/food/consumers/advice-about-eating-fish
- ACOG https://www.acog.org/womens-health/faqs/nutrition-during-pregnancy
Every verdict follows our sourcing methodology: official health guidelines only, most cautious position when they differ.
Last reviewed by the pregAI editorial team.
Frequently asked questions
How much Chilean sea bass can I eat per week while pregnant?
One serving a week, which the FDA defines as 4 ounces of cooked fish, about the size of your palm. If you have Chilean sea bass that week, fill the rest of your fish quota with low-mercury options like salmon, cod, or shrimp.
Is Chilean sea bass high in mercury?
It sits in the middle: higher than salmon or sardines, lower than swordfish, shark, bigeye tuna, or king mackerel, which the FDA says to avoid completely. That middle position is exactly why the limit is one serving a week rather than two or three.
I ate Chilean sea bass twice this week, should I worry?
No, the weekly limits are built around long-term average intake, not single meals. Mercury leaves the body slowly, so the practical fix is to choose low-mercury fish for the next week or two and then go back to your usual pattern.
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