The fish in the refrigerator will not taste good if cooked again. It's cold when you sit at noon now, and it won't taste good. Then I'll teach you two simple methods. One is to keep the original flavor of the fish. One is that you can pickle the fish now. The first one is very simple. Find two slices of ginger, put the fish's eyes in a cool place, and the fish will always be fresh. Very few shark fins are preserved in this way, which can be preserved for three days. The other is to marinate fish with beer, ginger and star anise with a little salt. It will be especially delicious when cooking at noon.