Hynobius fucus is an[2][3] endemic species of Taiwan, which is mainly distributed around the northwest mountain range, approximately an altitude of 1500 meters.

Their main feature is that their body is covered in small blue and white dots.

Hynobius fucus was first discovered in 1993 in the Guanwu mountain area in Tai'an Township, Miaoli County.

After many years of investigation, with many samples collected in 2008 further analysis of variations in the sequence of the mitochondria DNA was carried out in Taiwan by biologists Chun-Hsiang Lai and Kuang-Yang Lu.

Compared to the other type of salamander in Taiwan, the key difference is that they can be found at elevations as low as an altitude of 1310 meters, as seen in the Peichatienshan area.