About Leptobrachium smithi Matsui, Nabhitabhata & Panha, 1999
Leptobrachium smithi is a moderate-sized species of the genus Leptobrachium. Males of this species have a snout-vent length ranging from 36–68 mm (1.4–2.7 in), while females have a snout-vent length (SVL) of 50–78 mm (2.0–3.1 in). This species has a relatively large, flattened head and distinctive eyes, where the upper half of the iris is scarlet or yellow. The dorsal skin is nearly smooth, with small granules scattered across the posterior body, particularly around the vent; the ventral skin is granular. The type locality of Leptobrachium smithi is Ton Nam Plu Waterfall, Khao Chong, located in Trang Province, southern Thailand. Confirmed populations are also found in adjacent southern Myanmar and Laos. It may also occur in northeastern India, Bangladesh, and Pulau Langkawi in Peninsular Malaysia. Before this species was formally described, individuals of it were misidentified as Leptobrachium hasseltii or Leptobrachium pullum. Leptobrachium smithi is a locally common species. It occurs on the ground in evergreen forests in monsoon and rainforest climate zones, as well as in dense mixed deciduous forest. Its tadpoles inhabit deep, slow-flowing sections of forest streams.