Haddock is good source of Vitamin B6 and B12, magnesium, niacin, phosphorus, and selenium. Like most fish, haddock includes Omega- 3 fatty acids, which may provide a wide range of health benefits. It's also worth noting that haddock is high in cholesterol.
They rates among the best fish to eat because of their high-protein, low-calorie and low-mercury content. They have mildly sweet taste and lean, white meat that becomes whiter when cooked. Firm yet tender after cooking.