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Temporal range: Pleistocene - Recent
Hydromys chrysogaster - Gould.jpg
Hydromys chrysogaster
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Muridae
Subfamily: Murinae
Genus: Hydromys
É. Geoffroy, 1804
Type species
Hydromys chrysogaster
É. Geoffroy, 1804

Hydromys chrysogaster
Hydromys hussoni
Hydromys neobrittanicus
Hydromys ziegleri

red=Hydromys chrysogaster

green=Xeromys sp. and Hydromys chrysogaster
blue= Hydromys spp.

Hydromys is a genus of rodents in the subfamily Murinae. Three species are endemic to New Guinea and nearby islands. The fourth species, the rakali, is also found on Australia. The most recently discovered member of this genus was described in 2005.

List of species[edit]

Genus Hydromys - water rats

Note: Hydromys habbema Tate and Archbold, 1941 and Hydromys shawmayeri (Hinton, 1943) are placed within Baiyankamys after Helgen, 2005.


  • Helgen, K. M. 2005. The amphibious murines of New Guinea (Rodentia, Muridae): the generic status of Baiyankamys and description of a new species of Hydromys. Zootaxa, 913:1-20.
  • Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.
  • Woollard, P. Vestjens, W.J.M and L. Maclean. 1978. The ecology of the eastern water rat Hydromys chrysogaster at Griffith, NSW; Food and feeding habbits. Australian wildlife Research, 5:59-73.

External links[edit]