Type locality, Anyui River, Zoological Museum of Irkutsk State University no. P-1 (holotype of Thymallus tugarinae, 238 mm,SL, male). This species inhabits most of the lower Amur River Basin, partly its middle and the upper current up to the Never River, possibly even further to the upper reaches. It lives in certain rivers falling into the southern part of the Sea of Okhotsk (the rivers Tugur and Uda; the Mukhtel River, and the Sea of Japan), as well as in rivers of the Amur lagoon and on the south to the Psyu River (inclusive) and the NW extremity of Sakhalin Island: the Bolshaya, Bolshoi Vagis, Bolshaya Nelma, Bolshoi Nyavan, Volchanka, Glukharevka, Irkyr, Komulan, Langry, Pilvo, Pyrki, Sladkaya, Tengi, Uangi. Its southern border in the Amur Basin is the tributaries of the rivers Ussuri and probably the Sungari. At the north, the range of the Lower Amur grayling is limited by the rivers Tugur and Uda. Unlike other graylings of Siberia, it is absent in mountain lakes. It is sympatric with the nominative subspecies T. grubii grubii in the basin of the Middle and partly the Upper Amur, in upper reaches of all its large tributaries (the Amgun, Anyui, Bikin, Gur, Kur, Khor), as well as in rivers Tugur and Uda. It is sympatric with T. g. flavomaculatus and in the Bureya River, with T. burjensis. In these sympatric zones, this species usually inhabits lower and middle areas of the rivers, and usually does not occur in the upper reaches. It penetrates upstream up to the absolute altitude about 700 m (Ref. 57969). nEurRus