Why will a salt water soak for 30 minutes help to rid fish fillets of their fishy taste?

A salt water soak helps reduce the fishy taste in fish fillets by drawing out excess moisture and some of the compounds responsible for the strong odor, such as trimethylamine. The salt also helps to enhance the fish's natural flavors while improving its texture. Additionally, soaking can help to firm up the flesh, making it more palatable. Overall, this process can result in a milder, fresher taste.