How big a serving size is 4 ounces of fish?

A serving size of 4 ounces of fish is generally considered to be a standard portion for adults, roughly equivalent to the size of a deck of cards or the palm of your hand. This amount provides a good source of protein and essential nutrients, such as omega-3 fatty acids. For specific dietary needs or restrictions, it’s always best to consult with a nutritionist or healthcare provider.