New Guinea waterside rat

The New Guinea waterside rat (Parahydromys asper) is the only species in the genus Parahydromys, which was named by Franz Poche in 1906, and the species itself was described by Oldfield Thomas the same year. It is commonly called the Guinea rat. It is counted among the New Guinea Old Endemics, a group of murine rodents whose ancestors were part of the first wave to colonize the island. In the Kalam language of Papua New Guinea it is known as godmg or nyabap. The IUCN Red List classes it as Least Concern.