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fish — What It Is, Where It Hides, and How to Avoid It

Everything you need to know about fish — where it's found, common symptoms, hidden sources, and how Allerwise helps you avoid it.

Allergen Details


| What is fish?

Fish allergy is a reaction to proteins in finned fish — salmon, tuna, cod, halibut, anchovy, and others. It is distinct from shellfish allergy, although some people are allergic to both.

| Where is fish found?

Fish is obvious in fillets, sushi, and fish sticks, but also hides in Worcestershire sauce, Caesar dressing, fish sauce, surimi, fish gelatin, and some pizzas.

| Common symptoms of fish allergy

Reactions can be severe: hives, swelling, vomiting, breathing difficulty, anaphylaxis. Even fish vapours from cooking can sometimes trigger reactions in highly sensitive people.

| How Allerwise helps you avoid fish

Allerwise scans for every commonly used finfish and fish-derived ingredients including anchovy paste, fish sauce, fish gelatin, and stock cubes.

Avoid fish with Allerwise

Identifying fish in food products can be challenging and time-consuming. Allerwise makes this process simple and reliable.

  • Instantly scan product barcodes to check for fish
  • Get immediate alerts for fish and potential cross-contamination
  • Keep a history of scanned products for future reference
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