The diminutive Chinese pond turtle has a somewhat rectangular upper shell (carapace) with three distinct keels, or ridges, running down its length, which become worn and less pronounced with age (4) (5). The upper shell typically ranges from tan to dark brown (4) (5), while the skin is usually grey-green with yellowish spots and a distinctive pattern of yellow stripes running along the sides of the head and neck (5) (6). However, the shell and skin of melanistic individuals may be completely black and lack this striping (2) (6). Melanism occurs very rarely in females, but is common in older males. The lower shell (plastron) is generally yellow with a large brown blotch on each scute, but is dark brown or black in melanistic individuals (2).
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