Guenther's Frog (Sylvirana guentheri, 沼蛙).
It is always a delight to find amphibians in the wild. This frog was lurking midday around the waters of Wangling Park (王陵公园). There are many more in the murky pools around the bottom of Yuelu Mountain: they are not always to be seen but at night they can be heard. The Chinese name correctly suggests they reside in swamps and marshlands.