Fish that contains high Omega 3 Fatty Acid, such as Salmon and Tuna is great for your skin. It helps to support it and prevent wrinkles from forming.
Your Skin Cells Need High-Quality Fat
Your cells contain a protective barrier of these kinds of fats and eating fish helps keep that barrier healthy.
Healthy cells equal stronger skin. For maximum benefit go for wild caught salmon, not the farm raised kind. It has far more good fats in it.