Fish oils

Marine oils are good sources of omega-3 fatty acids, notably eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). They are extracted from various different oily fish, such as sardines, salmon, mackerel, tuna and herrings, but the fish do not make the oils themselves – they come from their own diet, usually microalgae, or for fish-eating fish, from other …

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