R. rhodopus is a smallish tree frog with a pointed snout and body length of about 31–55 mm when adult, with females being larger than males.

Its back is reddish-, pinkish-, or yellowich-brown without any green hues in living animals; in preserved specimens this becomes purplish brown.

[6] R. namdaphaensis, which refers to the same frogs as R. rhodopus, was assessed as a Data Deficient species in 2004, due to uncertainties about the limits of its distribution.

[7] Altogether, when R. rhodopus is accepted as a valid species (including R. namdaphaensis), it would be of Least Concern, meaning it is not threatened.

So the actual situation seems to be that the three taxa refer to two, not three species, with R. htunwini being a junior synonym of R. bipunctatus – possibly a restricted-range endemic of upland forest at the eastern end of the Himalayas, though it might occur south to Malaysia –, and R. namdaphaensis a junior synonym of R. rhodopus, a species that ranges widely from eastern India to the east and south and also occurs in lower-lying regions.

Indeed, the authors of the 1999 study stated, "[Liu and Hu] assumed that [R. bipunctatus] was green, possibly because Boulenger (1882) reported that it resembled R.

[3] In fact, the separation of R. htunwini from R. rhodopus – then called R. bipunctatus – was partly due to that striking difference in dorsal coloration.