"Mauremys mutica kami" is one of the subspecies. It is currently found in the Ryukyu Islands. There are several hybrid Asian pond turtles species. They were first described as new species but later found out as hybrid species. Fujian pond turtles ("Mauremys iversoni") are hybrid species mainly produced in Chinese turtle farms. They are produced when female yellow pond turtles and male golden coin turtles ("Cuora trifasciata") mates.