[1] There is one amphibian species, Liuixalus romeri, endemic to Hong Kong.
Rapid development in Hong Kong has resulted in the loss of many low-lying wetlands which were once important habitats; this has led to a severe decline in the populations of certain lowland species, such as the rough-skinned floating frog (Occidozyga lima), which inhabited the once-abundant, but no longer existing paddy fields in Tung Chung.
Pollution of water bodies and acid rain also affect species's survival.
In general, the diversity of amphibians decreases as the water pollution increases.
Only some hardier, pollution-tolerant species, such as Günther's frog and the Asian common toad, can thrive in polluted habitats.