Fish oil is healthy oil derived from the tissues of fatty fish, like sardines, salmon, mackerel, tuna, which are recommended by nutritionists. Ayam Brand™ only chooses the best quality Sardines from the cold seas. These sardines are much fattier and juicier to stand the extreme coldness. They contain richer fish oil which includes Omega 3. This is a natural process and shows that our sardines are of excellent quality.