The Amur River (Even: Тамур, Tamur; Russian: река́ Аму́р, IPA: [ɐˈmur]) or Heilong Jiang (Chinese: 黑龙江; pinyin: Hēilóng Jiāng, "Black Dragon River"; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ
ᡠᠯᠠ; Möllendorff: Sahaliyan Ula; Abkai: Sahaliyan Ula, "Black Water") is the world's tenth longest river, forming the border between the Russian Far East and Northeastern China (Inner Manchuria). The largest fish species in the Amur is the kaluga, attaining a length as great as 5.6 metres (18 ft).

Name

The Chinese name for the river, Heilong Jiang, means Black Dragon River in Chinese, and its Mongolian name, Khar mörön (Cyrillic: Хар мөрөн), means Black River.

Course

The river rises in the hills of western Manchuria at the confluence of its two major affluents, the Shilka River and the Ergune (or Argun) River, at an elevation of 303 metres (994 ft). It flows east forming the border between China and Russia, and slowly makes a great arc to the southeast for about 400 kilometres (250 mi), receiving many tributaries and passing many small towns. At Huma, it is joined by a major tributary, the Huma River. Afterwards it continues to flow south until between the cities of Blagoveschensk (Russia) and Heihe (China), it widens significantly as it is joined by the Zeya River, one of its most important tributaries.