Is Canned Fish Healthy? Sardines, Tuna and What to Look For
Canned fish can be a convenient and nutritious part of a balanced diet. Sardines and tuna provide protein, and oily fish such as sardines also provide omega-3 fatty acids.
Does canned fish keep its nutrients?
Canning changes texture and flavour, but many nutrients remain. The exact nutritional profile depends on the fish and whether it is packed in olive oil, vegetable oil, water, brine or sauce.
What should you check on the label?
- Protein per serving
- Salt or sodium
- The type of oil or sauce
- Ingredients and allergens
- Serving size
Are sardines a healthy canned fish?
Sardines provide protein and omega-3 fatty acids. Whole canned sardines can also contribute calcium because their softened bones are edible. Explore our Portuguese sardines.
What about canned tuna?
Tuna is high in protein and is easy to use in salads, sandwiches, rice and pasta. Nutrition varies by species and packing medium, so compare labels if you are watching calories or salt.
Olive oil or water?
Fish packed in olive oil usually has a richer flavour and more calories, while water-packed fish is often lighter. Neither format is automatically better for everyone; the best choice depends on taste and dietary needs.
Easy ways to eat canned fish
Serve it on toast, add it to salads or pasta, combine it with boiled potatoes, or build a simple sharing board with bread, olives and pickles.
Explore the wider context in our complete guide to Portuguese products, including sardines, tuna, olive oil, coffee, brands and Portuguese food regions.
