Amolops marmoratus is a species of ranid frog found in Asia. Its common names include marbled sucker frog, marbled cascade frog, Pegu torrent frog, and many others. The taxonomic status of many populations formerly assigned to this species is uncertain.
Amolops marmoratus shows a pronounced sexual dimorphism in size: males grow to snout-vent length of 38mm48mm and females to 70mm79mm. It is a relatively small species among Amolops.
Amolops marmoratus is only known with certainty from Myanmar and likely from northern Thailand, though it may occur more widely. For example, International Union for Conservation of Nature (IUCN), using a less stringent delineation of the species, reported the species also from Bangladesh, Bhutan, China, India, and Nepal. While IUCN in its assessment in 2004 considered Amolops marmoratus to be of "Least Concern" in view of its wide distribution and presumed large population, recognizing higher biodiversity within the species warrants further assessment of its conservation status.
As is typical for the genus Amolops,[1] Amolops marmoratus lives near fast-flowing mountain streams.