Dendrobium aduncum (the angelfish orchid or inward-bent dendrobium) is a species of orchid. It is native to southern China (Guangdong, Guangxi, Guizhou, Hainan, Hunan, Yunnan), the eastern Himalayas (Assam, Sikkim, Arunachal Pradesh, Bhutan, Myanmar), and northern Indochina (Laos, Thailand, Vietnam).