A small tree frog of eastern Japan and southern Sakhalin that breeds in still water, including rice fields and ponds.
Many individuals have black or white patterns on the rear thigh and rounded adhesive discs on their digits.
It breeds in still water in rice fields, ponds and ditches. Eggs are laid in small clumps, attached to vegetation or deposited on muddy bottoms.
An extinction-risk assessment has not been added yet.