Mussels form an essential part of its reproductive system, with bitterling eggs being laid inside them.
Amur River | Amur Oblast | Amur | Nikolayevsk-on-Amur | Komsomolsk-on-Amur | Skovorodino, Amur Oblast | Novopetrovka, Blagoveshchensky District, Amur Oblast | Amur Bridge Project | View of the 1413 Yongning Temple Stele, from ''The Russians on the Amur'' (1861) by Ernst Georg Ravenstein | Amur State University | Amur Railway | Amur Military Flotilla |