The amount of fat influences the external colouring of the fish, and we can classify the fish according to its content:
• Oily fish (otherwise known as blue fish) contains more than 5% fat.
• White fish contains less than 2% fat.
Both fish are rich in vitamins, minerals and high-quality protein, but there are some nutritional differences:
• In Spain, the most-consumed fish is undoubtedly hake. Closely followed by anchovies, sardines and salmon.
• The Spanish and the Portuguese consume the most fish in Europe. In Spain, the communities that consume the most fish are Galicia, Castile and León, Cantabria and the Basque Country.