Sturgeon is delicious. Sturgeon, which is generally farmed in artificial freshwater and weighs less than 10 pounds, has meat that is superior to that of the prized salmon. Mackerel. Mackerel is one of the four traditional farmed fish in China, they have a green back, gray belly, thick body, scale-free belly, and not too many hard spines in the body. The taste is not as good as sturgeon.