Can cats eat fish?
Cooked, boneless fish is fine as an occasional treat and provides valuable fatty acids. Raw fish, smoked fish and fish as a daily staple are unsuitable.
Why fish for cats?
Contrary to the cliché, fish is not a natural staple for cats — their ancestors were desert hunters of mice, not anglers. Still, cooked fish delivers high-quality protein and omega-3 fatty acids and is a welcome change for many cats. The form matters: cooked and boneless it is a good treat; raw, smoked or salted it causes problems.
How much is okay?
A small portion once a week is plenty. Fish should complement the diet, not dominate it — a complete cat food remains the base.
How to feed it?
Cook or steam fish without seasoning and remove all bones. Suitable are lean varieties such as cod, pollack or salmon (the latter in moderation, it is fattier). Unsuitable are raw fish (thiaminase, parasites), smoked and cured fish (salt), breaded fish and anything in sauce.
Risks & caution
Raw fish destroys vitamin B1 via thiaminase and can carry parasites. Frequent fish feeding unbalances the ration; smoked and salted products strain the kidneys. Fish bones can injure throat and gut.
Can kittens have fish?
For kittens, fish is unnecessary; if at all, a mini piece of cooked, boneless fish for older kittens. The base remains kitten food.
Signs of intolerance
Vomiting, diarrhoea or itching after fish can indicate intolerance or an allergy — fish is actually one of the more common feline food allergens. In that case, remove fish from the menu.
Related foods
Frequently asked questions
Can cats eat raw fish?
No. Raw fish contains thiaminase, which destroys vitamin B1, and can carry parasites. Always cook fish and remove the bones.
Which fish suits cats best?
Lean, cooked varieties such as cod or pollack, boneless and unseasoned. Salmon in moderation — it is fattier.
How often may cats eat fish?
A small portion once a week as a treat is fine. As a daily staple, plain fish is unbalanced.
Is smoked salmon allowed?
No. Smoked and cured fish contains far too much salt and belongs off the cat menu.
Can cats be allergic to fish?
Yes, fish is one of the more common feline food allergens. Itching, vomiting or diarrhoea after fish are signals to leave it out.
Important note
This article never replaces veterinary advice. If you suspect poisoning or symptoms persist, contact your vet or the emergency veterinary service immediately.
Sources: General veterinary recommendations on feline nutrition. Last updated: 08/2026.
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