Fanjingshan's relative isolation has ensured a high degree of biodiversity. Endemic species such as the rare Guizhou golden monkey (Rhinopithecus brelichi) and the Fanjingshan fir (Abies fanjingshanensis) occur only in a small region centering on Fanjingshan. Several endangered species, including the Chinese giant salamander, forest musk deer, and Reeve's pheasant are also found in Fanjingshan. It is also home to the largest and most contiguous subtropical primeval beech forest.