A medium to large sized frog with males 6 cm and females 12 cm in SVL. The skin of the back is finely pebbled. Bright green from snout to vent above on the head and back, flanks brown or green broken up by white or dark motley. Underside white. Tips of fingers with well developed discs, well developed welling between toes on hindlegs.
The species is common along clean, rock streams near primary or secondary forests. Most often seen couching or clinging on the rocks. Adult males usually hide in crevices among rocks, and call day and night. Quite often the calls were mistaken as calls from birds. Females lay big white eggs in shallow water areas, Back of the tadpoles is green. A sucking disc structure on ventral side to adapt torrent water.
An endemic species to Taiwan.
This species mainly inhabits in mountain streams or creeks that are either swift or slow flowing, from 50 m to 2000 m above sea level.