Onon is beautiful river powered by Khentii mountains and forms part of the Siberian Amur. Densely wooded region offers ideal conditions for the occurrence of the salmonid fish such as taimen, lenok, grayling, and Onon trout. Onon is also home of rare Amur Pike and so on. The river is suitable for fly fishing, but also for spinning. Huge fish stock is there during summer.

Anglers are accommodated in classic yurts with warm field shower and with good meals. Perhaps it is located in borderland, the presence of anglers is minimal.