Question: The client is aware that fish are a good source of omega-3 fatty acids, but the client is pregnant and concerned about the mercury content in the fish. Which of the following can the nurse recommend as a substitute to fish to provide omega-3 fats? The client is aware that fish are a good source of omega-3 fatty acids, but the client is pregnant and concerned about the mercury content in the fish. Which of the following can the nurse recommend as a substitute to fish to provide omega-3 fats? flaxseed oil fish oil supplements sunflower oil cottonseed oil