Fish is a nutritious food that provides high-quality protein, vitamins, and essential minerals. Some fish also contain collagen, particularly in their skin, bones, scales, and connective tissues. Four types are especially worth including in a balanced diet.

1\. Carp

Carp has long been a familiar and affordable food in many households. It provides protein, healthy fats, and nutrients such as vitamin A, vitamin E, magnesium, zinc, and selenium.

Around 100 grams of fresh carp contains approximately 17.6 grams of protein. Its amino acids help support normal body functions, while its protein contributes to maintaining healthy skin and muscles.

2\. Goby

Goby is another nutritious fish that provides protein while remaining relatively low in fat. It contains vitamins B2, D, E, and PP, along with minerals such as calcium, phosphorus, and iron.

Its skin, bones, and scales contain collagen, making these parts particularly valuable when preparing fish-based meals. Fish skin is generally a better collagen source than the flesh itself.

Including goby in a varied diet can help provide important nutrients that support overall health.

3\. Salmon

Salmon is widely recognized for its high nutritional value. It provides quality protein, omega-3 fatty acids, vitamin D, vitamin B12, and selenium.

Although salmon flesh is not especially rich in collagen, its skin, bones, and connective tissues contain collagen proteins. Salmon skin can also be processed to produce marine collagen supplements.

Its omega-3 fats support normal heart and brain function and help maintain the skin’s natural moisture barrier. Baking, steaming, or grilling salmon are simple ways to preserve its nutritional value.

4\. Sardines

Sardines are small but nutrient-rich fish packed with protein, omega-3 fatty acids, vitamin D, vitamin B12, calcium, and selenium.

Eating sardines with their soft bones provides additional calcium and phosphorus, which are important for strong bones and teeth. Their skin and connective tissues also contain collagen.

Overall, these fish can be valuable additions to a balanced diet. However, eating fish does not guarantee younger-looking skin or directly replace the collagen naturally produced by the body.