Nyishi (also known as Nishi, Nisi, Nishang, Nissi, Nyising, Leil, Aya, Akang, Bangni-Bangru, Solung) is a Sino-Tibetan language of the Tani branch spoken in Papum Pare, Lower Subansiri, Kurung Kumey, Kra Daadi, East Kameng, Pakke Kesang, Kamle districts of Arunachal Pradesh and Darrang District of Assam in India. According to 2011 census of India, the population of the Nishi speakers is 300,000 approximately. Though there are plenty of variations across regions, the dialects of Nishi, such as Akang, Aya, Nyishi (raga), Mishing, Tagin are easily mutually intelligible. With the exception of the rather small in population Bangni-Bangru and Solung Dialects being very different from the formers. 'Nisi' is sometimes used as a cover term for western Tani languages.