How long will mussels keep in the fridge after being cooked?

Once cooked, mussels can be stored in the refrigerator for up to four days. After cooking the mussels, it is important to place them in an air-tight container and refrigerate them within two hours of cooking. If the mussels cannot be consumed within four days, they can be frozen for up to three months. While foods frozen at 0 degrees Fahrenheit remain safe indefinitely, this time frame ensures that quality remains intact.