Wetlands are essential for the protection of endangered and threatened species. Wetlands in Nepal are rich in bio-diversity. This statement can be verified by the presence of 172 species of fish, and 190 wetland dependent birds (out of 850 species of birds of Nepal ) . Moreover, the aquatic reptiles and the mammals have also played a vital role in the diversification of the faunal varieties throughout the Nepalese wetlands.
Nepal 's wetland is characterized by the floral diversity more than the faunal diversity. Twenty-five percent of the 7,000 species of plants recorded in Nepal are aquatic. Of the 700 species of endemic plants, 27 are rare, seven are threatened, and nine are endangered species of endemic plants.