The striped marsh frog or brown-striped frog (Limnodynastes peronii) is a predominantly aquatic frog native to coastal eastern Australia. It is a common species in urban habitats.Females may reach a length of 75 millimetres (3.0 in) and males 70 millimetres (2.8 in). They are a shade of brown on the dorsal surface. This colour can be light or dark; they can also be a red-brown on the dorsal surface. There are distinct darker stripes running down the frogs back (giving this species it name), there is normally a paler mid-dorsal stripe running down the back. There is a black "mask" that runs from the nostril, through the eye and down to the shoulder. This "mask" is followed by a thick light golden line that runs underneath the "mask" and terminates at the end of the mouth. Breeding males develop thick arms, these are used in "wrestling" matches with other frogs, the throat of males is yellow in colour. The belly is white.It is distributed from the southern parts of the Cape York Peninsula in North Queensland, through all of coastal New South Wales, Southern Victoria to southeastern South Australia and Northern Tasmania. Although this species is very common in coastal NSW, it is not common in Tasmania and listed as rare.