Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Eat Minnows? Vet-Reviewed Facts & FAQ

Share

Can Cats Eat Minnows

If you’re a cat owner, you may have wondered whether your feline friend can snack on minnows. It’s a valid question. After all, fish are a natural part of their diet, in the wild, right? The answer is yes, so in this article, we’ll take a look at the pros and cons of feeding your cat minnows. We’ll also discuss some other tasty fishy treats that your kitty will love!

divider cats oct 2024

Can Cats Eat Minnows?

The short answer is yes, cats can eat minnows. In fact, many commercial cat foods contain fish as an ingredient. Fish is a good source of protein and omega-three fatty acids, both of which are essential for your cat’s health. There are a few things to keep in mind if you’re planning on feeding your cat minnows, though.

Holding a minnow on the fishing hook
Photo Credit: Khairil Azhar Junos, Shutterstock

Cooked Fish Is Better for Cats

First of all, make sure that the fish you’re giving them is cooked. Raw fish sometimes contain bacteria that can make your cat sick.

Bones Are a No-Go

Secondly, avoid giving your cat minnows with bones in them. The bones can splinter and cause internal damage. You’re more likely to see tiny minnows that are a non-issue when it comes to bones, but nevertheless, it’s worth mentioning.

Moderation Is Key

Finally, don’t go overboard. Like with any food, moderation is key. Too much fish can lead to digestive problems in cats.

So, there you have it! Cats can safely eat minnows, as long as they’re cooked, bone-free, and only on occasion.

divider cat paws oct 2024

What Are the Pros & Cons of Letting Cats Eat Minnows?

While there are some pros to letting your cat eat minnows, there are also a few cons. Let’s delve a little deeper and take a closer look at both sides of the argument.

Sick cat in animal hospital
Photo Credit: Kachalkina Veronika, Shutterstock

Pros of Eating Minnows

As we mentioned before, fish is a great source of protein and omega-three fatty acids. These nutrients are essential for your cat’s health and can help to keep their coat shiny and their skin healthy. Fish is also a low-fat food, which can be beneficial for cats that are overweight or have diabetes.

Cons of Eating Minnows

Although there are many benefits to feeding your cat minnows, there are also a few potential drawbacks. Thiaminase is the biggest concern. Raw fish often contains thiaminase which can lead to thiamine, or vitamin B1, deficiency in cats. This is another reason that it is recommended to cook fish, as this deactivates the thiaminase. Minnows along with many other fish species contain thiaminase.

Also of concern is mercury poisoning. Mercury is a toxic metal that can be found in fish, and it can build up in your cat’s system over time if they eat too much of it.

Another potential issue is allergies. Some cats are allergic to fish and may experience symptoms like vomiting or diarrhea if they eat it.

When in Doubt

If you’re considering giving your cat minnows, talk to a veterinarian first. They can help you to determine whether it’s a good idea for your individual cat and can give you advice on how to safely introduce fish into their diet.

divider cat faces oct 2024

Dangers of Puddle Minnows

While minnows from the pet store are safe for your cat to eat, there’s one type of minnow that you should definitely avoid feeding them: puddle minnows. These tiny fish are often found in stagnant ponds and puddles and can contain harmful parasites that can make your cat very sick. If you think your cat has eaten a puddle minnow, monitor them closely for changes and call your vet as soon as your cat shows symptoms.

Signs Your Cat Needs to See a Vet After Eating Minnows

While most cats will be just fine after eating minnows, there are a few signs that you should watch out for. If your cat is vomiting, has diarrhea, or appears to be in pain, call a vet right away. These could be signs of a problem that needs to be treated by a professional.

Other Fishy Treats for Cats

If you’re looking for other fishy treats that your cat will love, there are plenty of options to choose from! Here are a few of our favorite treats:

  • Canned tuna or salmon (be sure to check the label and choose a variety that doesn’t contain salt)
  • Cooked, deboned whitefish
  • Shrimp (cooked and peeled)
  • Cooked, deboned sardines

As with minnows these should also only be fed in moderation and are not a suitable substitute for complete cat foods.

Image Credit: Dr. Karyn Kanowski, Catster

divider cat paws 2 oct 2024

Conclusion

As you can see, there are both pros and cons to feeding your cat minnows. If you decide to give them a try, be sure to cook the fish thoroughly and remove any bones before feeding it to your kitty. Don’t let them eat minnows from dirty pools, puddles, or other stagnant water supplies because of the danger of increased parasites and bacteria. And, as always, if you have any concerns about your cat’s health after they’ve eaten fish, call your veterinarian right away.

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

Decoding The Cat Loaf: What It Means and When to Worry

Few cat behaviors have captured the internet quite like the loaf. Paws tucked neatly beneath the body, tail wrapped in, perfectly rectangular. As...

Your Cat Isn’t Picky – Their Nose Is Just Bored

If you’ve ever sighed while scraping uneaten cat food into the trash, you’re certainly not alone. Many cat owners know the routine: their...

Ask Dr. Paola – Help! My Kitten Won’t Use the Litter Box! (July 27, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Cat Trap Fever – Meet the Mother/Daughter Team Tackling Cat Overpopulation (with Video)

Have you ever looked at a problem and thought to yourself, “But what could I do?” or “How much difference can one person...

7 Vet-Verified Abyssinian Cat Colors: An Overview (With Pictures)

Abyssinians are known to be affectionate cats that are easy to care for, but perhaps they are best known for their beautiful, uniquely...

7 Health Benefits of Catnip for Cats – Based on Science

Most of us cat parents know that many cats have a weakness for catnip. So, while we might want to select a catnip-filled...

The Honest Kitchen Cat Food Review in 2026: Pros, Cons, Final Verdict

Choosing high-quality cat food made with fresh, whole ingredients is becoming increasingly important for many people. The Honest Kitchen is a brand that...

Keep reading

9 Interesting Cat Kidney Facts

Cats entertain us with acrobatic moves and amusing behavior, and some cat owners may believe that their strange pets come from another planet. Although felines seem alien to us, they’re more similar to humans than you may think. For instance,...

tabby cat at vet clinic

Can Cats Eat Asparagus? Vet-Reviewed Nutrition and Safety Explained

While you might love asparagus in risotto or as a side for your steak, should you be offering any leftover asparagus to your cat? Plenty of cats have a curious streak and love to investigate the smells (and tastes!) coming...

Can Cats Eat Asparagus

How to Tell if My Cat Still Has Kittens Inside: 10 Vet-Reviewed Signs

If your cat is pregnant, you want the birthing process to go smoothly. As your soon-to-be mother cat prepares to give birth, she’ll be restless and vocal, groom herself excessively around her vulva, pant more, and eat less. She’ll also...

tabby mother cat feeding her kittens

Can Cats Survive On Their Own By Hunting Wildlife? Vet-Approved Explanation

Cats are predators; even those who prefer to spend their time curled up in comfortable beds have the bodies and instincts of skilled hunters. The only real difference between feral cats and well-loved pets is their level of socialization. Cats,...

semi feral cat sitting on the ground looking up

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest eaters will delight in snacking on your houseplants. So, if your kitty decides to eat either an...

Can Cats Eat Onions

Fish Oil Benefits for Cats: Vet-Approved Tips & Health Effects

While shopping for cat food you may have noticed that many recipes include fish oil in their ingredient list, especially higher-quality recipes. You may have even seen some fish oil supplements on the shelves of your local pet store. Fish...

cat reaching out on fish oil capsules

How to Shave a Cat in 8 Vet-Reviewed Steps

As a general rule, cats should not be shaved. In some cases, however, there are exceptions. Cats with incredibly matted fur will benefit from being shaved and starting with new coat growth. Cats that are elderly or obese may face...

grooming cat with clipper

9 Best Whisker Relief Cat Bowls for Cats in 2026 – Reviews & Top Picks

Your cats’ whiskers help your cat balance and navigate their way through life. They are also attached to blood vessels and nerves, causing them to be incredibly sensitive. Whisker fatigue can happen when your cat has to dip their face...

himalayan persian cat eating hepper nom nom bowl

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.