This water rat is known from the Paniai (Wissel) Lakes of western New Guinea. Its description notes rich brown fur, and places it among New Guinea's amphibious murines.
Its fur is rich brown. The paper contrasts it with the newly described H. ziegleri, whose fur is less dense and glossier.
The paper includes this species among New Guinea's amphibious murines. It does not describe feeding or swimming behavior specific to this species.
An extinction-risk assessment has not been added yet.