For decades, chicken and beef have been the go-to proteins in dog food. But as more pet parents in Ireland and the UK look for healthier, more sustainable options, fish-based dog food is gaining attention and with good reason.
Fish provides lean, digestible protein along with Omega-3 fatty acids and essential vitamins that support everything from shiny coats to strong joints. It’s also a more sustainable choice, helping to reduce waste and support local fisheries.
At Harley & Marley, we’re proud to create superior fish-based nutrition from freshly prepared Irish fish, fully traceable back to Kilmore Quay. Our recipes were developed by world-renowned animal nutritionists and are now trusted by loving pet families both in Ireland and across the UK.
In this guide, we’ll look at how fish-based dog food compares with traditional meat diets - and why it could be the best choice for your furry friend/pet.
Why Fish is a Superior Protein for Dogs
As mentioned, fish is a lean, high-quality, and easily digestible protein that supports muscle maintenance and steady energy without the excess fat often found in meat-based diets.
It’s naturally rich in Omega-3 fatty acids (EPA and DHA), which play a vital role in:
- Supporting healthy brain and heart function
- Easing joint stiffness, especially in ageing dogs
- Keeping coats glossy and skin irritation-free
Research shows that Omega-3 fatty acids can reduce inflammation and improve joint comfort in dogs, making them especially important as pets age.
On top of this, fish is an excellent source of Vitamin B12, Vitamin D, Iodine, and Selenium - all key nutrients for long-term health. And because fish is generally easier to digest than chicken or beef, it’s often the preferred option for dogs with sensitive stomachs.
Our Complete Dry Dog Food, made with freshly prepared Irish fish, is designed to deliver these benefits every day. Many owners also choose to add fish oil supplements for an extra boost of Omega-3s to support skin health, a glossy coat, and flexible joints.
The Drawbacks of Traditional Meat-Based Diets
While chicken and beef are common, they’re also the most frequent causes of food allergies in dogs.
According to research, food sensitivities are a growing issue, with chicken and beef being leading triggers. Reactions can show up as itchy skin, digestive upset, paw-licking or even recurring ear infections.
Meat-based diets are also often higher in fat and lower in Omega-3, which can contribute to weight gain and inflammation over time.
From a sustainability perspective, large-scale meat production also carries environmental and welfare concerns that many modern pet owners are keen to avoid.
Veterinary nutritionists frequently recommend fish-based diets for dogs with food sensitivities or chronic conditions because of their gentler, anti-inflammatory properties.
“A fish-based diet is increasingly recognised as outstanding for sensitive stomachs and for its role in promoting a healthy skin & coat, joints and overall vitality in pets.” Portia Quinn, CEO
Health Benefits of a Fish-Based Diet for Dogs
Switching to fish-based dog food can unlock a wide range of health benefits:
- Easier digestion - suitable for sensitive stomachs and dogs with allergies
- Skin and coat health - Omega oils reduce dryness and promote a glossy shine
- Joint support - Omega-3 helps keep older dogs mobile and comfortable
- Brain and heart function - DHA and EPA support mental sharpness and cardiovascular health
For tailored solutions, explore our small breed recipes for delicate tummies, or our senior dog food for older pets needing extra joint care and weight management.
Sustainability – The Harley & Marley Difference
Not all dog foods are created equal. At Harley & Marley, our difference starts with Irish provenance and sustainability.
- We source our fish directly from Kilmore Quay, fully traceable back to individual boats and skippers.
- By partnering with Atlantis Seafoods, we help reduce seafood waste by 95%, supporting Ireland’s circular economy.
- Every recipe is hand-made in Ireland, using eco-friendly, recyclable packaging.
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And now, our trusted fish-based food is available to pet parents across the UK.
Organisations such as the Marine Stewardship Council emphasise the importance of traceable, sustainable fishing - values that guide our entire approach. This means every meal supports not just your dog’s wellbeing but also the health of our planet.
Our complete dry food comes in several options from puppy to senior - each recipe is specifically formulated to bring them the very best of health at all life stages.
Is Fish-Based Food Right for Every Dog?
Yes - fish-based food is suitable for all life stages.
- Puppies benefit from DHA-rich fish to support brain and body development.
- Adults thrive on lean, digestible protein for everyday vitality that does wonders for their skin and coat.
- Seniors gain support for joints, heart, and long-term health.
Tip for transitioning to Harley & Marley Dog Food
Introduce fish-based food gradually over 7–10 days, mixing it with your dog’s current food. Monitor energy, digestion, and appetite - most dogs adapt quickly and happily.
Owners looking for age-appropriate nutrition can explore our puppy complete dry food or weight management recipes for seniors.
Beyond Meals – Treats, Chews & Oils
Nutrition continues outside mealtimes. Our natural fish-based functional treats and daily chews are a healthier alternative to rawhide - safer, more digestible, rich in Omega oils, and offer a range of science-backed functional health benefits.
Adding fish oil supplements to a daily routine provides an extra layer of support for skin, joints, and overall vitality.
FAQs on Fish-Based Diets for Dogs
Is fish safe for dogs to eat every day?
Yes - when prepared correctly, fish is one of the best daily protein sources for dogs. Our complete recipes are balanced to provide all the nutrients your dog needs.
Can puppies eat fish-based food?
Absolutely. In fact, fish-based puppy food provides DHA and EPA to support healthy growth and brain development.
Is fish good for dogs with allergies?
Yes. Many dogs allergic to chicken or beef thrive on fish-based diets, which are gentler on sensitive stomachs.
What type of fish is best for dogs?
Nutrient-rich white fish (haddock and hake) and trout, like those we source from Kilmore Quay, are excellent choices for balanced, digestible nutrition.
Final Thoughts – A Healthier, Happier Future for Dogs
Choosing a fish-based diet is one of the simplest ways to give your dog balanced nutrition, long-term health benefits, and a lighter environmental footprint.
At Harley & Marley, our promise is simple: superior fish-based dog food, treats, and supplements - crafted with love in Ireland and trusted by pet parents across Ireland and the UK.
Explore our complete range today and discover how fish can help your dog live a healthier, happier life. If you have any questions, please don’t hesitate to contact us - we’re here to help you and your pet!
