From the YummyYucky team, founded by Nancy Nash

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Can Babies Eat Bluefish? How to Cook and Serve

Bluefish is a strong flavored oily fish. Its mercury is moderate, putting it in the Good Choices tier, but it also stores PCBs and other pollutants in its fat, so it is best offered occasionally, from smaller fish, with the skin and dark flesh trimmed away.

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When to introduce: 6 months+ (occasional)
Common allergen?: Yes - fish
Texture: Well cooked, flaked, skin and dark flesh removed
Key nutrients: Omega-3s, protein, vitamin B12, selenium

Bluefish is an oily, boldly flavored fish that many families love grilled. For a baby, it is neither a clear yes nor a clear no. Its mercury sits in the middle of the range, but bluefish is a fatty fish that tends to accumulate PCBs and other contaminants, which is why several local advisories ask children and pregnant people to go easy on it. It can be offered now and then, but with a little care about which fish you choose and how you trim it.

Prep School: how to prepare bluefish for baby-led weaning (BLW) and purées

🍴 Baby-led weaning

6 monthsChoose a smaller fish, remove the skin and the dark midline flesh, cook it fully, to 158°F (70°C) on a food thermometer,³ and mash the pale flakes onto a loaded spoon rather than handing over a piece. Keep it to an occasional serving and check your local fish advisory first.

9 monthsOffer soft flaked pieces of the trimmed pale flesh that your baby can pick up, checking for bones. Bluefish is strongly flavored, so pair it with a mild carbohydrate and vegetables.

12 months+Serve a small boneless portion of trimmed, well cooked bluefish with vegetables, keeping salt low. Because of PCBs, keep it occasional and favor lower mercury, lower contaminant fish for regular meals.

🥄 Purées

6 monthsChoose a smaller fish, take off the skin and the dark midline flesh, cook it fully, to 158°F (70°C) on a food thermometer,³ and mash the pale flesh smooth. Keep it to an occasional serving and check your local fish advisory first.

9 monthsMash the trimmed pale flesh a little lumpier, or stir soft flakes through a mild vegetable mash to soften the strong flavor. Keep checking for bones.

12 months+Spoon flaked, trimmed bluefish through soft vegetables or a mild grain, keeping salt low. Because of PCBs, keep it occasional and favor lower mercury, lower contaminant fish for regular meals.

Is bluefish safe? Choking & prep

Bluefish sits in the middle for mercury. The EPA and FDA place it in their Good Choices tier, and their advice for young children is two small servings of fish a week from the Best Choices list, so keep bluefish to now and then, as the only fish that week.¹ The bigger issue with bluefish is that it is an oily fish that stores PCBs and other pollutants in its fat, and many local advisories ask children and pregnant people to limit or skip larger bluefish for that reason. If you do offer it, choose smaller fish, remove the skin and the dark, fatty midline flesh where those contaminants concentrate, cook it fully, to 158°F (70°C) on a food thermometer,³ and check your state or local fish advisory first.¹ Bluefish is also very perishable and belongs to a group of fish that can cause histamine, or scombroid, reactions if it is not kept cold, so buy it very fresh and keep it chilled. Fish is a common allergen, so introduce it on its own and watch for a reaction.²

Trying bluefish today? Log the first taste and whether it was a hit, a hard maybe, or launched across the room, dated and ready for the pediatrician.

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Nutrition

Bluefish is rich in omega-3 fats, along with good quality protein, vitamin B12, niacin, and selenium. Those are real benefits, but with bluefish they come attached to a higher contaminant load than leaner or smaller fish, which is why lower mercury, lower PCB fish are the better everyday source of the same nutrients.

Goes well with

Mashed potato · Steamed green beans · Rice · Lemon (a squeeze) · Courgette

Storage & freezing

Bluefish spoils quickly, so cook it the day you buy it and keep it very cold until then. Freshness matters extra here because of the histamine risk in this family of fish. Refrigerate cooked leftovers in a sealed container and use within a day, or freeze raw and thaw in the fridge.

More proteins to explore

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Bombay duckAround 9 months

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Bonito6 months+ (occasional)

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BranzinoAround 6 months

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Capelin6 months+

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Brazil nut (ground)Around 6 months, ground or thinned only

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Breakfast sausageFrom about 12 months, as an occasional food

Introducing this allergen

Common questions

Can babies eat bluefish?

Occasionally, yes, if it is cooked fully, boneless, and trimmed of skin and dark flesh. Its mercury is moderate, but it also carries PCBs, so keep it to now and then and check your local fish advisory.

Why trim the skin and dark flesh?

PCBs and other fat soluble pollutants concentrate in the skin and the dark, oily flesh along the midline. Removing them before cooking cuts down how much your baby takes in.

Is smaller bluefish better?

Yes. Smaller, younger bluefish have had less time to accumulate contaminants, so they are the better choice if you are serving it to a child.

Sources

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Last updated September 2026. Next review December 2026. How we write these: built from current published guidance from the AAP, CDC, FDA/EPA, NIAID, WHO, and other pediatric and public-health authorities, with sources cited on the page. See our editorial and medical policy for how we research, source, and update these, and how we double-check the food advice.

This is general information, not medical advice, and is not individualized for your baby. Always talk to your pediatrician about your baby's diet, introducing allergens, and any reaction. In an emergency, contact emergency services.

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