This isn’t a scientific category but a group of species that use similar cooking techniques and whose flesh is also similar after cooking. It is a huge category of creatures found in both salt water and fresh water. The fish in this chapter are the ones you’ll find most commonly in the American market. From a sustainability perspective, whether farmed or wild, all of these species can be good options. But because of the range and diversity, it’s important to check for the approval of a certifying organization.