Based on the habitat, there are two groups of fish; freshwater fish and saltwater fish. Fish habitat influence the nutrient content of fish. Freshwater fish are rich in carbohydrates and protein, whereas marine fish are rich in unsaturated fats, vitamins and minerals.
Table content of Omega-3 Fatty Acids per 100 grams
Species of fish Omega-3 Fatty Acids (grams)
tuna 2.1
sardines 1.2
salmon 1.6
mackerel 1.9
herring 1.2
Teri 1.4
cobs 1.5
Alu 2.6
Tawes 1.5
bloating 2.2