New Guinea waterside rat

The New Guinea waterside rat (Parahydromys asper) is the only species in the genus Parahydromys. It is considered part of the New Guinea Old Endemics, meaning its ancestors were part of the first wave of murine rodents to colonize the island. It is commonly called the "Guinea rat".

Names
It is known as godmg or nyabap in the Kalam language of Papua New Guinea.