After graduating from classical gymnasium, Soldatov left for the capital and entered the Natural Science Department of the Faculty of Physics and Mathematics at St. Petersburg University in 1896.

He studied the biology and fishing of salmon on the tonyas of Russian fishermen and Sámi people in the Kola Bay and rivers flowing into the Barents Sea.

He managed to organize a Far Eastern expedition, which from 1907 to 1913 conducted year-round research on the biology of the main commercial fish (primarily salmon and sturgeon) in the Amur River basin.

In 1909, at the initiative of Soldatov, the first fish breeding plant for artificial salmon farming was built on Cape Bolshoi Chil[4] and in the Amur basin and throughout the Far East.

Next to him, the wife of a doctor, Soldatova Elena Petrovna (1882-1948) and his brother, Soldatov Leonid Konstantinovich (1888-1963), are buried.