The Chinese giant salamander (Andrias davidianus) is the largest salamander and largest amphibian in the world, reaching a length of 1. 8 m (5. 9 ft), although it rarely reaches that size today. It is fully aquatic and is endemic to rocky mountain streams and lakes in China. It has been introduced to Kyoto Prefecture in Japan and Taiwan. It is considered critically endangered in the wild due to habitat loss, pollution, and overcollection, as it is considered a delicacy and used in traditional Chinese medicine. On farms in central China it is extensively farmed and sometimes bred, although many of the salamanders on the farms are caught in the wild. It has been listed as one of the top 10 "focal species" in 2008 by the Evolutionarily Distinct and Globally Endangered (EDGE) project. The Chinese giant salamander is considered to be a "living fossil". Although protected under Chinese law and CITES Appendix I, it is estimated that the wild population has declined by more than 80% since the 1950s. Although traditionally recognized as one of two living species of Andrias salamander in Asia, the other being the Japanese giant salamander, evidence indicates that the Chinese giant salamander may be composed of at least five cryptic species, further compounding each individual species' endangerment.