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Choosing cat food with fish: a practical guide for every life stage

Cat food with fish may seem straightforward to choose at first glance. However, packaging can be misleading. An image of salmon or tuna does not automatically mean that fish is the main ingredient. Terms such as “natural”, “grain-free” and “with omega-3” only tell you something when you check the full ingredients list and nutritional status.

For cat owners in the Netherlands, these are three common pitfalls:

  • Confusing the flavour name with the main ingredient: a recipe “with salmon” may contain only 4% salmon, for example, while other animal ingredients appear higher up the ingredients list.
  • Using complementary food as a main meal: soups, fillets and liquid snacks are often intended as supplements or treats. They do not always provide all the nutrients needed for a daily meal.
  • Overlooking age and condition: cat food for kittens, adult cats and senior cats has a different nutritional purpose. A neutered cat may also need a tailored portion or formula.

What should you look for in cat food with fish?

1. Check whether it is complete or complementary food

Look for “complete cat food” or “complete nutrition” on the packaging. This means that, according to the product information, the product is intended as a daily main food for the stated life stage. If it says “complementary pet food”, “snack” or “treat”, use it as an extra rather than as a replacement for the main meal.

INABA Churu Cat Tuna is a good example. According to the product information, this treat contains 91% moisture and is a complementary product. Felix Deli Moments Salmon and Felix Soup Fish are also intended as snacks or supplements. When using products like these, take the main meal into account and adjust the total amount of food accordingly.

2. Check the ingredients list and fish percentage

Ingredients are generally listed in descending order by quantity. Therefore, pay attention to:

  • Which ingredients appear at the top;
  • The stated percentage of salmon, tuna, cod or other fish;
  • The amount of protein and fat;
  • Whether the recipe contains grains, pulses or other sources of carbohydrates;
  • Whether the food is suitable for your cat’s age.

With wet food containing fish, the percentage of fish is not always the same as the percentage of animal ingredients. Some Felix and Whiskas varieties, for example, state 4% of the named fish species, such as tuna, salmon or cod. This is a verifiable specification, but it does not indicate that the entire recipe consists of that fish.

Fish-based dry food usually has a low moisture content. This means that a portion contains more nutrients per gram, but your cat needs to drink enough. Wet food generally contains much more moisture. Sheba Filets, for example, states 84% moisture, while Whiskas Senior Fish Selection contains 84.5%.

3. Match the food to your cat’s life stage and needs

A kitten needs a recipe that is specifically labelled as kitten food. According to the product description, Iams Cat Kitten Ocean Fish contains DHA, taurine, vitamins and minerals, among other nutrients, and is intended for kittens. Farmina N&D Ocean Kitten Cod is also listed as a complete food for kittens.

There are many options for adult cats, such as Iams Naturally Adult Salmon & Rice, Purina One Adult Salmon and Perfect Fit Adult Salmon. A senior cat benefits from a product showing the correct age category, such as Whiskas Senior Wet Cat Food Fish Selection 7+.

For neutered cats, Farmina N&D Ocean Neutered Cat Herring is specifically described as complete food for adult, neutered cats. The product information states 11% fat and 46% crude protein. These are product specifications; the correct portion still depends on your cat’s weight, activity level and body condition.

Dry food, wet food or snacks?

Fish-based dry food for cats is convenient to store and easy to weigh out. It is suitable for households that want a larger bag, such as Iams Cat Adult Tuna 3 kg or g’woon Adult Cat Bites with Fish 2 kg. Always check the recommended amount and seal the bag securely.

Fish-based wet food for cats contains more moisture and is available in pouches, trays and tins. Felix Delicious Fish Strips in Sauce includes varieties with salmon, tuna, cod and plaice. The product information states 78% moisture and a pack containing 12 pouches of 80 grams. This can be useful if you want to alternate between different fish flavours.

Fish-based cat treats are suitable for bonding time or as a small reward. They should not replace your cat’s daily complete food. For INABA Churu Cat Tuna, the guideline for adult cats is 1 to 2 sticks per day. Include treats in your cat’s overall calorie and nutrition plan.

A gradual switch helps prevent unnecessary acceptance issues. Ideally, mix the new food with the old food gradually over approximately one week. Also follow the feeding guidelines on the packaging and adjust the portion to suit your individual cat.

Recommended choices for different types of cat owner

Suitable for: Budget-conscious beginners
WHISKAS Adult Wet Cat Food Fish Selection in Jelly Multipack 12×85g

WHISKAS Adult Wet Cat Food Fish Selection in Jelly Multipack 12×85g

Why it suits this profile: A multipack with different flavours for adult cats, without having to buy several separate products straight away.

How this product avoids the pitfall

The packaging states that this is complete wet food for cats over 1 year old. The fish varieties and percentages are listed in the ingredients.

Key benefit & advantages

12 portions of 85 grams, 84.5% moisture and guidelines for both wet food and combining it with dry food.

Suitable for: Shoppers looking for premium quality
Farmina N&D Ocean Cod, Spelt, Oats and Orange Flavor Adult Cat Food 1.5kg

Farmina N&D Ocean Cod, Spelt, Oats and Orange Flavor Adult Cat Food 1.5kg

Why it suits this profile: For anyone looking for a recipe with a clearly detailed ingredients list and cod as a prominent source.

How this product avoids the pitfall

The ingredients list states 27% fresh cod and 26% dehydrated cod. However, the recipe does contain spelt and oats, so “fish” does not mean grain-free in this case.

Key benefit & advantages

According to the product information, 26% protein and 15% fat, with fish oil from herring and added taurine.

Suitable for: Specific needs & intensive users
Farmina N&D Ocean Neutered Cat Herring 5 kg

Farmina N&D Ocean Neutered Cat Herring 5 kg

Why it suits this profile: Designed for households with an adult, neutered cat that use a larger bag of food.

How this product avoids the pitfall

The product name and statutory designation explicitly state that this is complete food for neutered cats. The packaging recommends switching over a minimum period of seven days.

Key benefit & advantages

Grain-free recipe, 34% herring plus 32% dehydrated herring protein, 46% crude protein and 11% fat according to the product specifications.

Suitable for: Families with a kitten
Iams cat kitten ocean fish 3kg

Iams cat kitten ocean fish 3kg

Why it suits this profile: A larger bag of dry food for kittens starting to eat solid food.

How this product avoids the pitfall

The product description explicitly states that this is kitten food and mentions DHA, taurine, vitamins and minerals. This makes the life stage clearer than with general cat food.

Key benefit & advantages

3 kg pack, dry food with ocean fish and a fibre blend with prebiotics and beet pulp according to the product description.

Looking for more options?

We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

Frequently asked questions about cat food with fish

Is cat food with fish suitable for every cat?

Not automatically. Check the life stage, nutritional status and ingredients. Cats with a known sensitivity to fish require different advice. If problems persist or your cat needs a special diet, it is advisable to consult a vet.

Is wet food with fish better than dry food?

That depends on your cat and its daily diet. Wet food usually contains more moisture, while dry food is convenient to store and weigh out. A combination can work, provided you monitor the total portion and both products are suitable as complete food.

How often can I give my cat food with tuna or salmon?

Follow the feeding guidelines on the packaging. Tuna or salmon treats are complementary and count as extras on top of the main meal. If you use fish-based food every day, preferably choose complete cat food that suits your cat’s age and condition.