🐟

Fish allergy in babies

Finned fish such as salmon and cod are nutritious early foods (a source of omega-3s) and can be introduced around 6 months. The main practical concern is removing bones.

Safe ways to serve fish

Well-cooked, flaked salmon or cod with all bones carefully removed
Fish mashed into a soft, mild base

⚠️ Remove every bone and check carefully. Choose lower-mercury fish (like salmon) and cook thoroughly. Finned fish and shellfish are separate allergens.

Want age-by-age prep, nutrition, and storage? See the full fish food guide →

Ready to start? Fish for babies: mercury rules and prep →

Signs of an allergic reaction

Hives, redness, or swelling (lips, face, tongue)
Vomiting or lots of drooling/coughing right after eating
Widespread rash or worsening eczema
Trouble breathing, wheezing, or floppiness: call emergency services immediately

General tips for introducing allergens

Most babies are ready for solids around 6 months, once they can sit with support and show interest.
Introduce one new allergen at a time and wait about 2 to 3 days before the next, so any reaction is easy to trace.
Once an allergen is tolerated, keeping it in the diet regularly is part of current guidance.
Offer allergens earlier in the day (not right before bed) so you can watch for any reaction.
If your baby has severe eczema or a known food allergy, talk to your pediatrician before introducing peanut or egg.

New to allergens? Read the complete introduction guide →

Frequently asked questions

When can babies eat fish?

Well-cooked, deboned finned fish like salmon can usually be introduced around 6 months. It’s a common early allergen worth introducing rather than delaying.

Sources

😋 🤢

Track it in YummyYucky

Log first tries and reactions, with an automatic allergen tracker when a food needs one, all in one place you can share with your pediatrician.

Start tracking for free

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.

Some links in our guides are affiliate links: if you buy through them we may earn a small commission, at no extra cost to you. We only suggest things we'd actually use, and it never changes our guidance.