Is there any poison in the nephelus yunwenensis? Epinephelus yunnanensis, also known as Sapphire and Epinephelus yunnanensis, is divided into Perciformes, Epinephelus, and Epinephelus yunnanensis, which is usually literally translated as spotted sea trout. The back of the adult sapphire fish is dark gray, with blue-green reflection, and the abdomen is silvery white. There are many round black spots on the fish body, so it is named sapphire fish. Sapphire fish has delicious meat, better taste than the famous grouper, high nutritional value, rich in calcium, iron, phosphorus, vitamins and highly unsaturated fatty acids, small internal organs, few bone spurs and high meat yield. It is an important food and fishing fish in the United States and has the reputation of "the first fish in the United States".