3 to 6 months. It is better to store frozen eels at a constant temperature of-18℃. Fish and seafood products contain a lot of unsaturated fatty acids and are easy to be oxidized. The shelf life of frozen eels is 3 to 6 months, and the temperature in the freezer is relatively low, which can inhibit the growth and reproduction of bacteria, but it can not completely eliminate bacteria. It is still possible for fish to deteriorate if they are frozen in the refrigerator for a long time, and the taste of fish will deteriorate and the nutrients of fish will be lost.