During pregnancy, you need to have a diet packed with nutrients to ensure proper nourishment for you and your baby. Whiting fish supplies important nutrients, including protein and a small amount of fat. A 3-ounce serving contains about 15 grams of protein with about 1 gram of fat. Some of these fats are healthy like Omega-3 fatty acids that help in protecting your heart from diseases. It is also beneficial for cognitive development of your baby.