Many cooks are simply reluctant to strive cooking fish at dwelling, and they're uncertain about how to buy the proper sort and handle it correctly. Again, if the fillet or steak has an off odor, don't purchase it. One can find contemporary fish at most giant supermarkets or at a retail fish market. Because of the wide variety of fish, this chart only covers the fish which can be readily obtainable at supermarkets and retail fish markets.