at the Yilan–Yitong fault zone is believed to have split the toad into two subpopulations in its native range, with the much smaller western one having low genetic diversity. In more recent times, gene flow has begun to occur between the two. Description Oriental fire-bellied toads can be bright, grayish, or brownish green, with black mottling on their dorsal regions. Like other Bombina species, B. orientalis has a brightly colored ventral region, which can be yellow, red, or orange-red, mottled with dark spots. The finger and toe tips are usually red. The skin on its upper side is covered in small tubercles, the most pronounced of the genus Bombina. Although it is typically referred to as a toad, the fire-bellied toad is not a true toad. They can reach a length of about , weighing about . Males and females can be told apart by the males' nuptial pads on their first and second fingers. Besides having more noticeable tubercles on their skin, B. orientalis can also be distinguished from other members of Bombina by their lack of gular sacs (like B. pachypus and unlike B. bombina) and nuptial pads (like B. bombina and unlike B. pachypus, although later research has shown that males do in fact have a few, as previously mentioned). Subtler differences include their belly coloration, which is typically more red than yellow (unlike B. pachypus) and bright finger tips (unlike B. bombina). Distribution and habitat The toad can be found in Korea, northeastern Russia, (where they have become rather rare) and northeastern China, and possibly southern Japan, specifically Tsushima Strait, although the latter is very likely erroneous, as a team of Japanese researchers in the later half of the 20th century was unable to locate any. There is also a somewhat genetically distinct population in Beijing that was introduced from Yantai in Shandong in 1927 by Mr. Liu Cheng-chao. About 200 were released into wetland habitats, where they later bred. There have been multiple reports of escaped specimens in Broward County, Florida, US, mostly in the immediate vicinity of an animal importer's facility. There have been no other reports of such occurrences in the United States, and there are no well-established escaped populations. They are semiaquatic, generally dwelling in slow-moving streams or ponds. When out of the water, they can often be found in coniferous and broadleaved forests. They can be found at elevations of up