This is a Japanese endemic that is mainly distributed in Kanto District on Honshu Island. It occurs up to 300m asl.
Habitat and Ecology
It occurs in forests from coastal areas to hilly areas. It breeds in paddy fields, ditches, and springs where the larvae also develop.
Most populations of this species are currently believed to be in decline.
This species is threatened by habitat loss due to infrastructure development (housing and road construction), water pollution, invasive species, and the drying out of its habitat. It is also collected for the pet trade.
There are currently no known conservation measures in place.
Red List Status
Listed as Vulnerable because its Extent of Occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its forest habitat on Honshu, Japan.
Yoshio Kaneko, Masafumi Matsui 2004. Hynobius tokyoensis. The IUCN Red List of Threatened Species 2004: e.T59103A11880869. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T59103A11880869.en .Downloaded on 20 February 2019