A fish name is only the first clue
ASCIA lists many fish species, including anchovy, cod, salmon and tuna, and stresses that its list is not exhaustive. Some people with fish allergy react to many species while others may tolerate a few. The decision to try a different fish belongs with a clinical immunology or allergy specialist. [1]
Use the fish allergy guide for an overview. Do not treat ‘white fish’, ‘seafood’ or a translated menu name as enough detail. Ask which species and supplier product is used for the actual dish, especially where substitutions are common.
Australia and New Zealand use ‘fish’ as a required allergen declaration when applicable; a label’s mandatory category may still leave a species question for your individual plan. Read the entire current package. [2]
Follow the liquid ingredients
ASCIA flags fish stock, fish sauce, fish paste and sauces containing anchovy as foods to check. Caesar dressing, Worcestershire sauce, some pasta sauces and soups are examples in its guide. These are categories to investigate, not a claim about every brand or recipe. [1]
For a soup or curry, ask whether the stock starts from fish, whether a fermented fish sauce is added, and whether a premade paste contains fish. For a salad, ask about the dressing before asking only about the garnish. A tiny amount in a sauce still matters to an ingredient check.
Ask staff to show the current bottle or tub if the seasoning is bought in. Ingredient records explain general forms, but the product in the kitchen is the one that matters.
Keep fish and shellfish questions distinct
Fish and shellfish are separate allergen questions. ASCIA’s fish guide directs readers to its shellfish guide if their specialist has recommended avoiding shellfish too. It does not tell every fish-allergic person to avoid all shellfish. [1, 3]
At a seafood counter or fish-and-chip shop, ask how fish and shellfish are stored, fried and served. ASCIA notes that fish-and-chip-shop oil may be contaminated by fish. Shared tongs, oil and work surfaces need a preparation answer in addition to a recipe answer. [1]
Fish-oil supplements also need individual advice: ASCIA describes allergic reactions as low risk after purification but recommends medical advice before consumption. Do not use this article to approve a supplement. [1]
The question to ask before ordering
Ask: ‘Does this dish use fish in the stock, sauce, paste, dressing or garnish, including anchovy or fish sauce? Could you check the exact product and explain how this order is cooked and served around fish?’
The restaurant questions guide can help you separate ingredient and handling answers. If the kitchen cannot verify either, leave the item unconfirmed. Recheck when the venue changes its supplier or recipe.
If a restaurant offers to replace the fish sauce or stock, confirm the replacement ingredient and the cookware used to make it. A change to one component cannot verify the dressing, garnish or side dish. Save a clear answer for this visit and ask again on a future visit.
Sources & references
Source pages checked 18 October 2026. Confirm the exact current recipe and preparation with the venue.