Dragon Shield, the scientific name of China giant grouper, also known as pig lamb spot, is a warm-water marine benthic fish, belonging to Perciformes, Grouper, Grouper subfamily and Grouper genus. It has an oval shape, a flat side and a big mouth. There are many blue-black spots scattered on the fish's head, side and fins, so it is a large and precious edible fish.

In natural sea areas, adult fish are generally 60 cm ~70 cm long, 2 meters long, and weigh about 30 kg ~ 40 kg, with a maximum of 100 kg ~ 160 kg. According to records, in July of 1999, a female dragon fan, weighing 180 Jin, was once regarded as the dragon king in dongsha islands.

According to the latest report, on the night of 2014,6543810.5, Malaysian fishermen trawled a wild dragon fan weighing 200 kilograms and sold it to the Chinese proprietor of a restaurant at a high price of 1. 1 Wanlingji.