Sinonatrix percarinata percarinata (Boulenger, 1899)
|Species||Sinonatrix percarinata percarinata|
|Other name||Chinese Keelback, Eastern Water Snake, Olive Keelback|
|Chinese name||華游蛇指名亞種, 華游蛇, 草赤鏈|
Average 70 - 90 cm, may grow up to 110 cm.
Back colour dark brown or olive brown, with a maximum of 36 black or brownish bands forking dorsally.
Inhabits elevated aquatic habitats, from moderate to steep hill and mountain streams that have cascades, large pools of varying depth and moderate to swift current.
Usually nocturnal. A strong swimmer, most often found swimming in stream pools at night or inside catchwaters.
Feeds on frogs, fishes and tadpoles.
Oviparous. A single female was reported to have 6 eggs.
First recorded in Hong Kong in 1970.
|Conservation Status||IUCN Redlist: NE (Not Evaluated)|