1. Put the fish directly into the refrigerator to freeze. When you need it, take the fish out of the refrigerator to thaw it, and the fish will be as fresh as live fish.

2, put the bought live fish into a container with cold water, let the fish lie horizontally inside the container for a period of time, and then put it into the refrigerator freezer to keep. This method will let the fish die slowly, but after low temperature treatment, the fish will not deteriorate easily, and as long as it is cooked in time, the taste will not be affected.

3, killed fish frozen in the refrigerator can be put up to 9 months. National "fresh and frozen animal aquatic products health standards (GB2733-2005)" provides: aquatic products at -18 ℃ under the condition of frozen, shelf life of 9 months. Refrigerator freezing temperature can reach -20 ℃, if the package is sealed well, the taste will not have much change; if the closure is not tight, there will be some air drying, although the taste will be worse, but does not affect consumption. Home refrigerator, often open and close the door, turn to get something, the temperature is high and low, to ensure a constant temperature, so the shelf life to be shortened accordingly, as long as the closed good, generally a few months no problem. However, it is still recommended to eat as soon as possible, the longer the time, the worse the taste.