| Trimerodytes percarinatus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Genus: | Trimerodytes |
| Species: | T. percarinatus |
| Binomial name | |
| Trimerodytes percarinatus (Boulenger, 1899) | |
| Synonyms | |
Trimerodytes percarinatus, commonly known as the eastern water snake, [3] olive keelback, [3] olive annulate keelback [3] or Chinese keelback water snake, [1] is a species of snake [3] in the subfamily Natricinae.
The type locality for T. percarinatus is Guadun (formerly spelled as Kuatun), Wuyishan City (former Chongan County) in NW Fujian, China. [3]
The subspecies Trimerodytes percarinatus suriki is endemic to Taiwan [3] where it occurs in the whole country. [4]
T. percarinatus is a defensive snake that bites readily when caught, but it is not venomous. [4] [5] It is a medium-sized snake, typically attaining a total length (including tail) of 70–90 cm (28–35 in), but may grow up to 110 cm (43 in). [5] An adult female usually lays 4 to 13 eggs, [1] but may lay as many as 25 eggs. [4]
T. percarinatus is found in NE India (Changlang District, Arunachal Pradesh), Myanmar (= Burma), Thailand, Laos, Vietnam, S China (Hainan, Zhejiang, Jiangxi, Fujian, Guangdong, Guangxi, Guizhou, Sichuan, Hubei), Hong Kong, and Taiwan. [1] [3] It is an aquatic species associated with hilly areas. [1] [5]
T. percarinatus preys on shrimps, frogs (including tadpoles), and fish. [4]
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