 Two additional clades are only known from captivity (their wild range is unknown) and no samples are available for the population in the Tibetan Plateau.A 2019 study has identified that the Yangtze River clade comprises the "true" "A. davidianus", the Pearl River clade comprises "A. sligoi", and the Qiantang clade comprises the undescribed Huangshan Mountains species.Finds in Taiwan may be the result of introduction.