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Species of turtle
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The golden coin turtle (Cuora trifasciata), also known commonly as the Chinese three banded box turtle and the Chinese three striped box turtle, is a species of turtle in the family Geoemydidae. The species is native to southern China. There are two recognized subspecies.

C. trifasciata is distributed in China, but only on the island of Hainan (it is extirpated from the mainland Guangdong, Guangxi, and Fujian provinces), as well as Hong Kong.

C. trifasciata has three distinct black stripes on its brown carapace, with a yellow, slightly hooked upper jaw and a yellow stripe extending from the back of the mouth. The plastron is mostly black with a yellow border.

Two subspecies are recognized as being valid, including the nominotypical subspecies.

C. trifasciata hybridizes very easily with its relatives in captivity and in the wild, and hybrids may be fertile. Several of these have been described as new species, such as the Fujian pond turtle (Mauremys × iversoni), a hybrid between (usually) males of this species and females of the Asian yellow pond turtle (Mauremys mutica). In addition, the golden coin turtle is suspected to be a parent of two supposed species, the Chinese false eyed turtle and Philippen's striped turtle.

The species C. trifasciata is considered critically endangered by the IUCN. It is used in folk medicine, e. g. as the key ingredient for the Chinese medicinal dessert guīlínggāo (龜苓膏); thus, it is under threat because of unsustainable hunting. It is one of the most endangered turtle species in the world, according to a 2003 assessment by the IUCN. C. trifasciata is listed among Turtle Conservation Coalition's 25 most endangered tortoises and freshwater turtles. Wild C. trifasciata turtles are far more valuable than farmed raised turtles of this species to both traditional Chinese medicine practitioners and illegal wildlife traders. The gender of C. trifasciata is determined by gestation temperatures. The largest C. trifasciata farming operation is said to be located in Boluo County, Guangdong. According to the farm's founder Li Yi (李艺), the farm was started in 1989 with eight wild turtles (two males and six females) bought at a local market, and now has "over 2000" turtles. According to the farm's site, captive born turtles start breeding at 8 years of age.