Fish congee is a great source of carbohydrates, protein, vitamins, and minerals, such as iron, magnesium, and zinc. Congee is easy to digest, making it a great food for people who are recovering from an illness or surgery. Fish is a great source of omega-3 fatty acids, which have been shown to improve cognitive function. The anti-inflammatory properties of fish can help relieve joint pain. Some studies have shown that consuming fish can help protect against certain types of cancer.