Cod Fish vs. Other Fish: Substitutes, Comparisons & Oil Differences
Cod is a mild, lean white fish with firm flesh and large flakes. It works well in recipes that call for baking, frying, grilling, stewing or breading, but it is not the only fish with these qualities.
If cod is unavailable, haddock, pollock and hake can often be used as practical substitutes. Halibut is a thicker, denser premium alternative, while tilapia and basa or swai are more budget-friendly options with a softer texture.
Cod is also frequently confused with cod liver oil. Although both cod and cod liver oil come from the same fish, cod fillets are a lean protein food, while cod liver oil is a concentrated supplement containing fat and, depending on the product, vitamins A and D.
Best Substitutes for Cod
Haddock
Haddock is one of the closest culinary substitutes for cod. It has a mild flavour and tender flakes, although its texture can be slightly softer or more delicate.
Use haddock for:
- Fish and chips
- Baking
- Chowder
- Fish pies
- Pan-frying
- Fish cakes
Haddock may have a slightly more noticeable flavour than cod, depending on freshness and preparation.
Pollock
Pollock is a mild, affordable white fish from the cod family. Alaska pollock is widely used in fish sticks, breaded fillets, fish sandwiches, soups, fish cakes and surimi products.
It can replace cod in many everyday recipes, although its texture may be softer and its flakes may be less coarse than a thick cod loin. Pollock is often a good choice when cost is a priority.
Hake
Hake belongs to the broader Gadiformes order, along with cod, but it is not the same species or family. It has mild white flesh and is commonly used in baked, pan-fried and stewed dishes.
Hake is often softer and more delicate than cod, so handle it carefully when frying or turning it in a pan.
Halibut
Halibut is a thick, firm flatfish with a dense, meaty texture. It can replace thick cod loins in grilling, roasting or pan-searing recipes, but it is usually more expensive.
Because halibut is denser, it may require different cooking time from cod. Use the thickness of the portion rather than the recipe name as your main timing guide.
Tilapia
Tilapia is primarily a warm-water freshwater fish and is commonly farmed. It has a mild flavour and relatively soft texture.
Tilapia can work in:
- Tacos
- Curries
- Pan-fried dishes
- Baked fillets
- Breaded recipes
Its flavour depends on species, farming conditions, feed, storage and freshness. It should not automatically be described as earthy or low quality.
Basa and Swai
Basa and swai are budget-friendly white fish that can be used in breaded dishes, tacos, curries and simple baked recipes. Their flesh is usually softer and less flaky than cod, so they may not be ideal for recipes requiring large, firm flakes.
Cod Compared with Other Fish
| Fish | Water type | Typical flavour | Texture | Common uses |
| Cod | Marine saltwater | Very mild and clean | Large, firm flakes | Baking, frying, tacos and chowder |
| Salmon | Marine fish; migrates to freshwater to spawn | Rich and distinctive | Tender and oily | Grilling, roasting and searing |
| Tilapia | Primarily freshwater | Mild | Soft and fine-flaked | Tacos, curries and pan-frying |
| Haddock | Marine saltwater | Mild, sometimes slightly stronger than cod | Tender flakes | Frying, baking and chowder |
| Pollock | Marine saltwater | Mild; varies by species | Soft to moderately firm | Fish sticks, soups and fish cakes |
| Halibut | Marine saltwater | Mild and slightly sweet | Thick and dense | Grilling, roasting and searing |
| Hake | Marine saltwater | Mild and delicate | Soft to medium flakes | Baking, pan-frying and stews |
Nutrition values vary by species, brand, farmed or wild origin and whether the fish is measured raw or cooked.
Cod vs. Salmon
Cod and salmon offer different nutritional profiles.
Cod
- Lean and relatively low in calories
- High in protein
- Mild in flavour
- Low in total fat
- Provides a modest amount of omega-3 fats
Salmon
- Higher in total fat and calories
- Richer in EPA and DHA omega-3 fatty acids
- Often a better source of vitamin D
- Stronger, richer flavour
- Suitable for roasting, grilling and pan-searing
Neither fish is universally healthier. Cod may suit someone looking for a lean, low-fat protein, while salmon may be preferable for someone trying to increase omega-3 intake.foodstruct+1
Choose sauces and cooking methods carefully, because a fried or cream-based cod dish can contain more calories than a simply prepared salmon dish.
Cod vs. Tilapia
Cod is a cold-water marine fish, while tilapia is primarily a warm-water freshwater fish that is commonly farmed.
Cod generally has:
- Thicker fillets
- Larger flakes
- A firmer texture
- A mild, clean flavour
Tilapia generally has:
- Thinner fillets
- Smaller flakes
- A softer texture
- A neutral flavour that works well with spices and sauces
Tilapia can replace cod in tacos, curries and breaded recipes, but it may break apart more easily in soups or when turned in a pan.
Pollock vs. Cod
Cod and pollock are both members of the Gadidae family. Pollock is commonly used in processed seafood because it is affordable, widely available and suitable for breading and shaping.
Cod is often preferred for:
- Thick fresh fillets
- Large, firm flakes
- Restaurant-style presentation
- Fish pies and premium mains
Pollock is often preferred for:
- Fish sticks
- Fish cakes
- Fish sandwiches
- Surimi
- Soups and budget-friendly meals
The final difference depends on the exact species, portion thickness and freshness. A high-quality pollock fillet may perform better than a poorly handled cod fillet.
Hake vs. Cod
Hake and cod are both mild white fish, but hake usually has a softer and more delicate texture.
Hake is useful in:
- Spanish-style seafood dishes
- South American recipes
- Tomato-based stews
- Baked fish dishes
- Pan-fried fillets
Use a wide spatula when cooking hake, and avoid excessive stirring or turning.
Cod Liver Oil vs. Fish Oil
Cod liver oil and standard fish oil are different supplements, although both may contain EPA and DHA omega-3 fatty acids.
Standard Fish Oil
Standard fish oil is usually extracted from the body tissue of oily fish such as anchovies, sardines or mackerel. It is mainly used to provide EPA and DHA.
Most standard fish-oil products contain negligible vitamin A, but the exact formula depends on the brand and whether vitamins have been added.
Cod Liver Oil
Cod liver oil is extracted from the liver of cod. It may contain:
- EPA and DHA
- Vitamin A
- Vitamin D
The amounts vary substantially between products. Cod liver oil does not automatically contain more omega-3 than standard fish oil; in some cases, fish oil provides a higher EPA/DHA dose.healthline+1
Key Supplement Differences
| Feature | Standard fish oil | Cod liver oil |
| Source | Body tissue of fish, often oily fish | Liver of cod |
| Main purpose | EPA and DHA supplementation | EPA/DHA plus possible vitamins A and D |
| Vitamin A | Usually negligible; check label | May be significant |
| Vitamin D | Usually low; check label | May be significant |
| Omega-3 dose | Often higher, depending on product | Product-specific and sometimes lower |
| Main caution | Dose, quality and medication interactions | Excess vitamin A and overlapping supplements |
Which Supplement Is Better?
Neither supplement is universally better.
Standard fish oil may be more suitable when:
- The goal is a clearly labelled EPA/DHA dose.
- You want to avoid additional vitamin A.
- You already take a multivitamin containing vitamins A or D.
- A healthcare professional has recommended omega-3 supplementation.
Cod liver oil may be considered when:
- You understand the vitamin A and D content.
- The product label clearly states the amounts.
- You are not taking overlapping supplements.
- A healthcare professional considers it appropriate.
Do not assume that “natural” means risk-free. High intake of fat-soluble vitamins can cause harm.
People who are pregnant or trying to become pregnant should not start cod liver oil without medical advice, because excessive preformed vitamin A, also called retinol, can harm fetal development.
Fish-oil and cod-liver-oil supplements may also interact with medicines, including some blood-thinning drugs. Discuss regular supplementation with a healthcare professional.
Frequently Asked Questions
What is the best substitute for cod?
Haddock is often the closest everyday substitute. Pollock is a good budget-friendly option, hake works well in stews and baked dishes, and halibut is a thicker premium substitute for cod loin.
Is cod liver oil the same as regular fish oil?
No. Standard fish oil usually comes from fish body tissue and is mainly used for EPA and DHA. Cod liver oil comes from cod liver and may also provide vitamins A and D.healthline+1
Is cod healthier than salmon?
Neither is always healthier. Cod is leaner and lower in calories, while salmon usually provides more omega-3 fats and vitamin D. The better choice depends on your dietary goals and preparation method.
What is the closest fish to cod?
Haddock is usually the closest culinary substitute. Pollock and hake are also practical alternatives, but their texture may be softer.
Is hake the same family as cod?
No. Hake and cod belong to the broader Gadiformes order, but they are different fish families. They are similar enough to substitute in many recipes.
Can I use tilapia instead of cod?
Yes, especially in tacos, curries, pan-fried dishes and breaded recipes. Expect a softer texture and adjust cooking time according to the thickness of the tilapia fillets.
Final Takeaway
Cod is a lean, mild fish with large flakes, making it especially useful for frying, baking, chowder, tacos and fish pies. Haddock is usually the closest substitute, while pollock offers a budget-friendly option, hake provides a softer alternative and halibut works well when a thicker, denser fillet is desired.
Cod liver oil and standard fish oil should not be treated as interchangeable. Fish oil is generally chosen for its EPA and DHA content, while cod liver oil may also provide vitamins A and D. Always check the supplement label, avoid unnecessary overlapping products and seek professional advice when pregnancy, medication or medical conditions are involved.
