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Top 5 Grain-Free Tuna Cat Foods in Canada for 2025: Vet-Informed Picks for Picky Eaters, Sensitive Stomachs, and Strong Fish Flavor

Published on Wednesday, August 20, 2025

Grain-free tuna cat food refers to formulas where tuna or tuna-forward fish blends are the primary protein source and grains have been removed from the recipe. These products are popular in Canada for their strong fish flavor, high animal protein content, and appeal to picky eaters and cats with suspected grain sensitivities. They come in both wet and dry formats, with wet options offering extra moisture for urinary tract health and dry options providing convenience and dental abrasion. Canadian shoppers increasingly prioritize complete, balanced recipes that meet AAFCO or FEDIAF standards, sustainable sourcing labels, clear ingredient lists, and appropriate nutrient profiles for life stage and health needs. Buyers also weigh palatability, mercury and sourcing concerns for fish-based diets, and the presence of added taurine, omega-3 fatty acids, and digestible proteins when selecting the best grain-free tuna option.

Quick Menu

1. Best Fish-Forward Dry Blend

2. Best Flaked Tuna Wet Option

3. Best Regional Seafood Formula

4. Best High-Protein Fish Variety

5. Best Tuna-Enhanced Wet Meal

1
BEST FISH-FORWARD DRY BLEND

Wellness CORE Grain-Free Ocean Whitefish, Herring & Salmon Recipe

Wellness CORE

Wellness CORE Grain-Free Ocean Whitefish, Herring & Salmon Recipe earns a best-in-class position as a high-protein, grain-free kibble with concentrated omega-rich fish sources that appeal to cats inclined toward tuna-flavored diets. Compared with the wet, tuna-forward items on this list, CORE provides a more shelf-stable, typically lower cost-per-serving dry option while still competing on ingredient quality with premium fish-focused brands like Orijen and ACANA.

4.4
★★★★☆

  • Protein-packed punch

  • Omega-rich boost

  • Protein-packed punch

  • Omega-rich boost

Review Summary

88%

"Owners report cats generally love the fish-forward formula and appreciate the high protein, grain-free ingredient list; a few note the strong fish smell and higher price. Overall seen as a premium dry option that improved coat and energy for many cats after switching."

  • Seafood flavor fiesta

  • Grain-free dry formula featuring ocean whitefish, herring and salmon for strong fish flavor

  • Seafood flavor fiesta

  • Grain-free dry formula featuring ocean whitefish, herring and salmon for strong fish flavor

Increased Safety & Security

Recreational Enjoyment

Wellness CORE Grain-Free Ocean Whitefish, Herring & Salmon Recipe earns a best-in-class position as a high-protein, grain-free kibble with concentrated omega-rich fish sources that appeal to cats inclined toward tuna-flavored diets. Compared with the wet, tuna-forward items on this list, CORE provides a more shelf-stable, typically lower cost-per-serving dry option while still competing on ingredient quality with premium fish-focused brands like Orijen and ACANA.

  • Protein-packed punch

  • Omega-rich boost

  • Seafood flavor fiesta

  • Grain-free dry formula featuring ocean whitefish, herring and salmon for strong fish flavor

  • High protein and omega-3 fatty acids to support skin, coat and overall health

  • Protein-packed punch

  • Omega-rich boost

  • Seafood flavor fiesta

  • Grain-free dry formula featuring ocean whitefish, herring and salmon for strong fish flavor

  • High protein and omega-3 fatty acids to support skin, coat and overall health

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$25-45 CAD

2
BEST FLAKED TUNA WET OPTION

Blue Buffalo Wilderness Grain-Free Wild Delights Flaked Tuna & Chicken

Blue Buffalo

Blue Buffalo Wilderness Grain-Free Wild Delights Flaked Tuna & Chicken is the market leader for accessible, tuna-inclusive grain-free diets, offering wide retail availability and a price point that makes tuna-based feeding practicable for many owners. It sacrifices some of the ultra-premium fish diversity and higher whole-fish inclusion of Orijen and ACANA in favor of a more budget-friendly, palatable flaked tuna profile compared with wetter, higher-moisture options like Weruva.

4.1
★★★★☆

  • Wild-inspired taste

  • Flaked texture appeal

  • Wild-inspired taste

  • Flaked texture appeal

Review Summary

80%

"Many buyers say cats readily eat the flaked tuna and chicken and enjoy the texture, though some experienced occasional digestive upset or found the scent overpowering. Considered a tasty grain-free wet option but with mixed long-term tolerance for sensitive stomachs."

  • Tuna-chicken duet delight

  • Grain-free wet flaked tuna and chicken formula designed for high palatability

  • Tuna-chicken duet delight

  • Grain-free wet flaked tuna and chicken formula designed for high palatability

Recreational Enjoyment

Increased Safety & Security

Blue Buffalo Wilderness Grain-Free Wild Delights Flaked Tuna & Chicken is the market leader for accessible, tuna-inclusive grain-free diets, offering wide retail availability and a price point that makes tuna-based feeding practicable for many owners. It sacrifices some of the ultra-premium fish diversity and higher whole-fish inclusion of Orijen and ACANA in favor of a more budget-friendly, palatable flaked tuna profile compared with wetter, higher-moisture options like Weruva.

  • Wild-inspired taste

  • Flaked texture appeal

  • Tuna-chicken duet delight

  • Grain-free wet flaked tuna and chicken formula designed for high palatability

  • High moisture content helps support hydration and urinary tract health

  • Wild-inspired taste

  • Flaked texture appeal

  • Tuna-chicken duet delight

  • Grain-free wet flaked tuna and chicken formula designed for high palatability

  • High moisture content helps support hydration and urinary tract health

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$2-5 CAD

3
BEST REGIONAL SEAFOOD FORMULA

Acana Pacifica Grain-Free Cat Food

ACANA
🏠 Local Product

ACANA Pacifica is a strong contender for owners seeking a fish-forward, grain-free dry formula that emphasizes whole Pacific fish and comparatively lower carbohydrate content, positioning it as a technically balanced middle ground between mainstream and ultra-premium offerings. Financially it often sits below Orijen in price while delivering higher fish inclusions than many budget brands, making it a practical upgrade for tuna-preferring cats whose owners want better fish sourcing without the top-tier premium cost.

4.3
★★★★☆

  • Multi-fish variety

  • Low-carb formula

  • Multi-fish variety

  • Low-carb formula

Review Summary

86%

"Users praise the high-quality, limited-ingredient, fish-forward recipe and report good palatability and healthy coats, while a minority mention a strong fish aroma and occasional loose stools during transition. Regarded as a solid, regionally sourced grain-free choice for fish-loving cats."

  • Pacific breeze flavor

  • Grain-free recipe focused on multiple wild-caught regional fish sources

  • Pacific breeze flavor

  • Grain-free recipe focused on multiple wild-caught regional fish sources

Increased Safety & Security

Recreational Enjoyment

ACANA Pacifica is a strong contender for owners seeking a fish-forward, grain-free dry formula that emphasizes whole Pacific fish and comparatively lower carbohydrate content, positioning it as a technically balanced middle ground between mainstream and ultra-premium offerings. Financially it often sits below Orijen in price while delivering higher fish inclusions than many budget brands, making it a practical upgrade for tuna-preferring cats whose owners want better fish sourcing without the top-tier premium cost.

  • Multi-fish variety

  • Low-carb formula

  • Pacific breeze flavor

  • Grain-free recipe focused on multiple wild-caught regional fish sources

  • High inclusions of fresh or raw fish and limited carbohydrate content

  • Multi-fish variety

  • Low-carb formula

  • Pacific breeze flavor

  • Grain-free recipe focused on multiple wild-caught regional fish sources

  • High inclusions of fresh or raw fish and limited carbohydrate content

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$30-60 CAD

4
BEST HIGH-PROTEIN FISH VARIETY

Orijen Six Fish Grain-Free Dry Cat Food

ORIJEN
🏠 Local Product

Orijen Six Fish is the market leader on technical merit, offering one of the highest diversities and inclusions of whole fish among dry foods to closely match a biologically appropriate, fish-heavy diet for cats attracted to tuna flavors. It typically carries a premium price but outperforms competitors on ingredient variety and minimal carbohydrate formulation, making it the technical choice for owners prioritizing maximal fish content over cost.

4.6
★★★★☆

  • Six-fish feast

  • Biologically appropriate

  • Six-fish feast

  • Biologically appropriate

Review Summary

92%

"Frequently cited as top-tier for ingredient quality and high protein content, most owners report excellent palatability and visible health benefits; drawbacks are expense and some cats being sensitive to the rich formula. Widely recommended by those seeking a biologically appropriate, fish-heavy dry food."

  • Ocean festival crunch

  • Premium grain-free dry food with six different fish species for diverse marine proteins

  • Ocean festival crunch

  • Premium grain-free dry food with six different fish species for diverse marine proteins

Recreational Enjoyment

Increased Safety & Security

Orijen Six Fish is the market leader on technical merit, offering one of the highest diversities and inclusions of whole fish among dry foods to closely match a biologically appropriate, fish-heavy diet for cats attracted to tuna flavors. It typically carries a premium price but outperforms competitors on ingredient variety and minimal carbohydrate formulation, making it the technical choice for owners prioritizing maximal fish content over cost.

  • Six-fish feast

  • Biologically appropriate

  • Ocean festival crunch

  • Premium grain-free dry food with six different fish species for diverse marine proteins

  • Very high protein and rich in DHA/EPA to support cognitive and eye health

  • Six-fish feast

  • Biologically appropriate

  • Ocean festival crunch

  • Premium grain-free dry food with six different fish species for diverse marine proteins

  • Very high protein and rich in DHA/EPA to support cognitive and eye health

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$45-85 CAD

5
BEST TUNA-ENHANCED WET MEAL

Weruva Paw Lickin' Chicken in Gravy with Tuna

Weruva

Weruva Paw Lickin' Chicken in Gravy with Tuna is best-in-class among wet, tuna-inclusive options because its high-moisture, gravy-based format and human-grade processing deliver exceptional palatability and hydration benefits for finicky cats. Although it is generally pricier per serving than dry kibbles, it complements dry fish-forward diets like Orijen and ACANA by providing a direct, highly appetizing tuna experience that can improve intake and urinary tract hydration.

4.5
★★★★☆

  • Gravy-soaked morsels

  • Chicken-tuna duet

  • Gravy-soaked morsels

  • Chicken-tuna duet

Review Summary

87%

"Cats typically love the gravy and combination of chicken with tuna, and owners appreciate the high moisture and simple ingredients; occasional buyers report inconsistent texture between cans and higher cost. Considered a reliable wet, grain-free option that many cats eat enthusiastically."

  • Hydration-rich wet

  • Wet chicken in gravy formula boosted with tuna for added taste appeal

  • Hydration-rich wet

  • Wet chicken in gravy formula boosted with tuna for added taste appeal

Recreational Enjoyment

Time-Saving Convenience

Weruva Paw Lickin' Chicken in Gravy with Tuna is best-in-class among wet, tuna-inclusive options because its high-moisture, gravy-based format and human-grade processing deliver exceptional palatability and hydration benefits for finicky cats. Although it is generally pricier per serving than dry kibbles, it complements dry fish-forward diets like Orijen and ACANA by providing a direct, highly appetizing tuna experience that can improve intake and urinary tract hydration.

  • Gravy-soaked morsels

  • Chicken-tuna duet

  • Hydration-rich wet

  • Wet chicken in gravy formula boosted with tuna for added taste appeal

  • Grain-free, high-moisture meal ideal for hydration and picky eaters

  • Gravy-soaked morsels

  • Chicken-tuna duet

  • Hydration-rich wet

  • Wet chicken in gravy formula boosted with tuna for added taste appeal

  • Grain-free, high-moisture meal ideal for hydration and picky eaters

Order Now

$2-6 CAD

What the Research Says About Grain-Free, Fish-Based Diets for Cats

Scientific literature and veterinary nutrition guidance emphasize key nutritional priorities for cats: high-quality animal-based protein, adequate taurine, balanced amino acid profiles, and appropriate levels of essential fatty acids. Fish-based diets can deliver strong palatability, EPA and DHA omega-3s, and valuable protein, but they also require careful formulation to avoid nutrient imbalances and to limit contaminants such as mercury. While some canine studies have explored links between certain grain-free diets and heart issues, evidence in cats is limited; veterinarians recommend choosing complete and balanced products and consulting a vet for individualized advice.

Taurine is essential for cats. Research shows that animal-based proteins provide the taurine cats need to support heart function, vision, and reproduction; properly formulated commercial foods should list taurine or meet AAFCO/FEDIAF nutrient profiles.

Omega-3 fatty acids from fish (EPA and DHA) support skin, coat, and anti-inflammatory pathways. Peer-reviewed studies indicate measurable benefits for dermatologic and joint conditions when adequate omega-3s are included.

Palatability and appetite: studies and clinical experience confirm that fish-flavored diets are often more appealing to picky cats, improving intake and weight maintenance when used appropriately.

Contaminant caution: long-lived predatory fish can accumulate mercury. Nutrition guidance recommends variety in protein sources and moderation of single-fish diets to reduce contaminant risk.

Grain-free does not equal hypoallergenic. Most feline food allergies are protein based, so grain-free labels are primarily useful for owners avoiding grains for intolerance or preference rather than proven allergy treatment.

Regulatory and formulation standards matter. Choosing products that state AAFCO or FEDIAF compliance and have transparent sourcing and nutritional panels reduces the risk of nutrient imbalance.

In Canada, grain-free tuna recipes remain a sought-after option for cat owners who want a strong fish flavor and high animal protein without grains. The five main products covered on this page — Wellness CORE Grain-Free Ocean Whitefish, Herring & Salmon Recipe; Blue Buffalo Wilderness Grain-Free Wild Delights Flaked Tuna & Chicken; Acana Pacifica Grain-Free Cat Food; Orijen Six Fish Grain-Free Dry Cat Food; and Weruva Paw Lickin' Chicken in Gravy with Tuna — each offer different balances of palatability, ingredient sourcing, and nutrient density. For most Canadian households looking for a dependable combination of balanced nutrition, availability, and good fish flavor, Wellness CORE Grain-Free Ocean Whitefish, Herring & Salmon Recipe is the best overall choice among these picks. We hope you found what you were looking for; use the site search to refine by life stage, format, or ingredient preferences, or expand your search for limited ingredient or sustainably sourced fish formulas.

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