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Can Babies Eat Smelt? A Low-Mercury First Fish

Smelt is a tiny, oily fish that is low in mercury, so it is one of the fish babies can eat regularly from around 6 months. Cook it through, check carefully for bones, and flake or mash it soft. Fish is one of the common allergens.

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When to introduce: Around 6 months
Common allergen?: Contains fish, a common allergen
Texture: Cooked through and flaked soft; check carefully for bones
Key nutrients: Omega-3 fats, protein, calcium, vitamin B12

Smelt are the little silver fish you often see fried whole, and they make a genuinely good early fish for babies. They are small and short-lived, which is exactly why they stay low in mercury, so the FDA lists them among its Best Choices you can serve a couple of times a week¹. From around 6 months, cooked through and boned, smelt flake into a soft, mild, slightly rich bite that is easy to mash into other foods. The two things to manage are the same as any fish: the bones, and the fact that fish is a common allergen.

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

Around 6 monthsCook the smelt through until it flakes easily, then remove the head, tail, and backbone and check carefully for small bones. Flake the flesh and mash it into a familiar purée or a little olive oil so it is smooth and easy to swallow.

9 to 12 monthsOffer soft flakes of boned smelt for your baby to pick up, or stir them through mashed potato, rice, or vegetables. Keep checking for stray bones every single time.

Serving it as an allergenFish is one of the common allergens, so if your baby has not had fish before, offer a little on its own and watch for a reaction over the next couple of days before mixing it into meals.

Is smelt safe? Choking & prep

Two things matter with smelt, and neither is mercury: as a small fish it is low in it and an FDA Best Choice you can serve regularly¹. First, bones. Smelt are small and their bones are easy to miss, so cook the fish through, remove the head, tail, and backbone, and run your fingers through the flakes to catch strays before serving, because a fish bone is a choking and injury risk for a baby². Second, fish is one of the common food allergens. Current guidance is to introduce it early rather than delay, but to do it on its own the first time and watch for any reaction. Always serve fish cooked through, never raw, and keep your baby seated and supervised.

Trying smelt 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

For a tiny fish, smelt punch well above their size. They are rich in the omega-3 fats DHA and EPA, which support a baby's rapidly developing brain and eyes, along with high-quality protein and vitamin B12. Whole smelt are often eaten by adults with their soft cooked bones, which adds calcium, but for a baby always debone carefully; the calcium is a bonus, not a reason to leave any bones in. That mix of brain-building fats and minerals is why oily fish is worth including in a baby's week, and smelt's low mercury means you do not need to ration it the way you would a bigger fish.

Goes well with

Mashed potato or sweet potato · Soft-cooked rice or congee · A little olive oil to loosen the flakes · Steamed and mashed peas or carrot · Soft avocado with a squeeze of lemon

Storage & freezing

Cook smelt the day you buy it, or freeze it fresh and use within about 3 months. Once cooked, keep leftovers covered in the fridge and use within a day, and do not reheat cooked fish more than once. If you batch-cook, freeze flaked, boned smelt in small portions and thaw in the fridge before using promptly.

More proteins to explore

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Smoked salmon (lox)Skip; serve cooked salmon instead

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SnapperAround 6 months

🥛

Soy milkAround 6 months (in food or a small cup)

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Split peasAround 6 months

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Squab (pigeon)Around 6 months, once baby is ready for solids

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SquidAround 9 months, once baby is a confident eater

Introducing this allergen

Common questions

Can babies eat smelt?

Yes, from around 6 months. Smelt is a small, low-mercury fish, so it is one you can serve regularly. Cook it through, remove the bones carefully, and flake it soft. Introduce it on its own first, since fish is a common allergen.

Is smelt high in mercury?

No. Smelt are small and short-lived, so they are low in mercury and sit in the FDA's Best Choices list, meaning they are fine to eat a couple of times a week.

How do I remove bones from smelt for a baby?

Cook the fish through, then take off the head, tail, and backbone and gently flake the flesh apart with your fingers, feeling for any small bones as you go. Mash the boned flakes into another food for a smooth first texture.

Is smelt a choking hazard for babies?

The flesh is soft once flaked, but the small bones are the real risk. Debone carefully, mash or flake it soft, and always supervise. Never serve smelt fried whole to a baby.

Sources

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Last updated July 2026. Next review January 2027. How we write these: grounded in widely published pediatric guidance (the AAP, WHO, the NIAID 2017 allergen guidelines, and the LEAP study), and pending independent review by a pediatric professional. See our editorial and medical policy for how we research, source, and update these.

This is general information, not medical advice, and has not been individually reviewed 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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