Many nutrients play a role in maintaining normal skin. These include zinc, copper, iodine and three B vitamins – riboflavin (B2), niacin (B3) and biotin. Different varieties of fish provide a range of these nutrients. For example, many shellfish provide zinc and copper. Meanwhile, a variety of white, oily and shellfish provide iodine and niacin. Riboflavin is found in crab, flounder, herring, mussels, mackerel, whiting and sardines. And biotin is found in cockles, basa, white crabmeat, oysters, plaice and sardines.

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