15 Safe Fish Choices That Can Boost Your Dog’s Health

Not all foods are safe for dogs, even if they’ll eat anything. Fish can be a healthy addition to their diet, providing both protein and essential fats when chosen wisely. As a pet owner, it’s important to know which fish are safe and beneficial for your dog’s health. So, here’s a look at 15 fish choices that meet your dog’s dietary needs without compromise.

Salmon

Omega-3 fatty acids in salmon are key for maintaining your dog’s brain and joint health. Just be sure it’s fully cooked and free of bones—raw salmon can carry dangerous parasites. Opt for wild-caught salmon when possible, as it typically has fewer toxins than farmed varieties.

Whitefish

Whitefish is a popular choice among pet owners for its gentle, nutrient-rich benefits. It’s packed with essential vitamins that support digestion and overall health. Varieties like cod and haddock are especially good for dogs with sensitive stomachs, making whitefish a smart, soothing option.

Sardines

Small but mighty, sardines are packed with nutrients—including calcium for strong bones. They’re also rich in vitamin B12 and vitamin D, which support energy and bone health. For a safe option, go with canned sardines in water and avoid those with added oils or preservatives that can harm your dog.

Herring

Herring is one of the safest and most nutritious seafood choices for dogs. Rich in omega-3 fatty acids, it supports heart health and keeps joints flexible. It’s also low in mercury and loaded with vitamin D, which makes it a great booster for your dog’s immune system.

Arctic Char

A safer alternative to salmon, Arctic char is a nutrient-rich fish that provides essential omega-3 fatty acids for dogs with fewer toxins. Dogs whose skin is dry may feel better after eating it. Since quality varies, sourcing wild-caught Arctic char helps reduce unnecessary contaminants.

Catfish

Farm-raised catfish helps fulfill a dog’s need for amino acids and essential nutrients. Compared to other fish, catfish is a low-cost, high-protein option that suits most dogs. It doesn’t have as much omega-3 as salmon, but it’s still a beneficial source of important nutrients.

Ocean Whitefish

Commonly found in commercial dog food, ocean whitefish is valued for its lean protein and healthy fats. Thanks to its digestibility and protein content, it’s an ideal choice for dogs who have sensitive stomachs. According to PetMD, it’s also a low-mercury fish packed with beneficial omega-3s for overall health.

Walleye

This high-protein freshwater fish is excellent for maintaining strong muscles in dogs. Unlike bottom-feeding species, it carries a lower risk of contamination, making it a cleaner protein source. When fed in moderation, it supports bone strength, boosts coat quality, and helps sustain healthy energy levels.

Flounder

Delicious and easy to digest, it’s perfect for dogs who have food allergies. Many veterinarians highlight flounder as a low-mercury, high-protein option for dogs with dietary sensitivities. This fish contributes to joint health and immune function, thanks to its rich omega-3 content.

Mackerel (Atlantic)

This skin-nourishing superfood is rich in essential fatty acids that enhance your dog’s skin and coat health. With benefits for heart and brain growth, it’s an ideal choice for their diet. However, steer clear of king mackerel, as its higher mercury levels can pose serious health risks to dogs.

Perch

If you’re looking for a mild, easily digestible fish for your dog, perch is a great choice. Packed with heart-healthy nutrients, it supports cardiovascular health and provides lasting energy. Just be sure to cook it without spices to keep it safe and free of additives.

Trout

When trout is added to your dog’s food, it boosts their immune system and keeps their coat and skin moist. It’s best when caught in the wild and cooked the right way. Plus, it provides high-quality protein and omega-3 fatty acids, which are beneficial for joint support.

Light Tuna (Canned)

Looking for an easy-to-digest, protein-packed fish for your dog? Light tuna is a great option. Choose water-packed tuna, as it has fewer contaminants than oil-packed varieties. While it may not have as many nutrients as sardines, light tuna still offers plenty of health benefits for your pup.

Pollock

Pollock is a low-fat fish packed with B vitamins that aid digestion and metabolism. Dogs benefit from its high protein content, as it helps maintain muscle mass and energy levels. Unlike some other fish, Pollock contains lower mercury levels and is a safer option for routine feeding.

Tilapia

Tilapia is a lean, nutritious protein that many veterinarians approve of, only if it’s sourced responsibly. It must be thoroughly cooked to eliminate any potential contaminants. Since farm-raised tilapia can carry higher pollutant levels, it’s best to choose certified, high-quality sources for your dog’s safety.