Sardines are also generally considered a lower-mercury seafood choice compared with many large predatory fish. This makes them a practical option for people who want to include fish regularly in a balanced diet.
Fresh sardines can be steamed, grilled, or cooked in tomato sauce. Canned sardines are also convenient, although it is worth checking the sodium content, especially if you need to limit salt.
5. Mackerel
Mackerel is another nutritious fish that supplies high-quality protein, omega-3 fatty acids, vitamin B12, selenium, and other essential nutrients.
Its skin and connective tissues contain collagen, while the flesh provides protein that the body uses to build and repair tissues. Protein is essential for maintaining muscles, supporting immune function, and producing important enzymes and hormones.
Mackerel is particularly valued for its omega-3 content. These fatty acids help support cardiovascular health and play a role in regulating inflammatory processes in the body.
However, not all mackerel species have the same mercury levels. Atlantic mackerel and chub mackerel are generally lower in mercury, while king mackerel can contain much higher levels. Pregnant women, nursing mothers, and young children should follow local seafood safety guidance and choose species carefully.
Mackerel tastes delicious when steamed with ginger, grilled, or cooked in a light tomato sauce. These cooking methods allow its natural flavor to stand out without requiring excessive oil.
6. Tilapia
Tilapia is a widely available freshwater fish known for its mild flavor, soft texture, and relatively affordable price.
It provides lean protein and several important nutrients, including vitamin B12, selenium, phosphorus, and potassium. Because it is relatively low in fat, tilapia can be a suitable choice for people who want to increase their protein intake without consuming large amounts of fat.
Like other fish, tilapia contains collagen in its skin, bones, and connective tissues. However, its flesh should primarily be considered a source of protein rather than a concentrated source of collagen.
Tilapia is easy to prepare and works well in many dishes. It can be steamed with ginger and scallions, cooked in soup, baked with herbs, or pan-seared with a small amount of oil.
When buying tilapia, choose fish from reputable suppliers and make sure it has been stored and handled properly.
7. Catfish
Catfish is a popular freshwater fish in many parts of the world. It is valued for its soft flesh, mild taste, and good protein content.
Catfish supplies several nutrients, including vitamin B12, phosphorus, selenium, and other minerals. Depending on the species and farming conditions, its fat content can vary.
The skin and connective tissues of catfish contain collagen, while the flesh provides amino acids that the body needs to maintain and repair its tissues.
Catfish can be prepared in many ways, including steaming, grilling, baking, and cooking in soup. In Vietnamese cuisine, it is also commonly prepared with ginger, turmeric, or traditional seasonings.
As with other freshwater fish, proper cleaning and thorough cooking are important. Buy catfish from reliable sources, especially when purchasing fish from rivers, lakes, or areas where water quality may be uncertain.
8. Tuna
Tuna is a convenient source of high-quality protein. It also provides vitamin B12, selenium, niacin, and other nutrients that support normal body functions.
Some tuna products contain omega-3 fatty acids, although the amount varies considerably depending on the species and whether the fish is fresh or canned.
Tuna skin and connective tissues contain collagen, but tuna meat is better understood as a source of protein and other nutrients rather than a major dietary source of collagen.
One important consideration when eating tuna is mercury exposure. Larger tuna species tend to accumulate more mercury because they are higher in the marine food chain. The amount can differ substantially between light tuna, albacore, bigeye, and other types.
People who eat tuna frequently should vary their seafood choices and follow recommendations for their age and health circumstances. Pregnant women and young children should be especially careful about selecting lower-mercury fish.
Tuna can be added to salads, sandwiches, soups, or rice dishes. Choose products with moderate sodium levels and avoid relying on tuna as the only fish in your diet.
How Does Fish Collagen Support the Body?
Collagen is a structural protein found throughout the human body. It is an important component of the skin, bones, cartilage, tendons, ligaments, and other connective tissues.