This species inhabits mixed coniferous and broad-leaved forests, open meadows, river valleys and swampy bush lands. It can adapt to modified habitats. It breeds in streams, pools, paddy fields, ditches and other waterbodies (Fei et al. 2012).

This species is found in northeastern China (northeastern Inner Mongolia and Heilongjiang south to southern Liaoning, and in northern Jiangsu), throughout the Democratic People's Republic of Korea and the Republic of Korea and in the Khabarovsk and Primorye regions in Russia. Records of this species from southern Japan (Tsushima and Kiushiu islands) are now believed to be in error (M. Matsui pers. comm.). There is a small-introduced subpopulation of this species close to Beijing and another one in Shandong. Some invasive subpopulations are also found in Florida, USA. It is a lowland species present up to 500 m asl in Russia, but is present up to 1,100 m asl in the Republic of Korea.

Conservation Actions In-Place
This species is present within a number of protected areas in China and the Korean Peninsula and six nature reserves in Russia. It is listed on the Red Data Book of Khabarovskii Region, Russia. 

Research Needed
There is a need to monitor the relatively small Russian subpopulation.