Species composition and succession of coral reef fishes in Huaguang Reef, Xisha Islands

Huaguang Reef, one of the expansive atolls in the Xisha Islands, is completely mature, stretching 31 kilometers from east to west and 12 kilometers from north to south. Positioned as a concealed reef in the water, only the north and south gates are connected to the sea, attracting frequent fishing activities by local fishermen. However, the ecological environment and biological communities of Huaguang Reef are susceptible to disturbance s from both natural forces and human activities. Consequently, it serves as an exemplary ecosystem for studying typical coral reef fisheries, offering insights into fish species composition and community structure.