Keelback SnakesSoutheast Asia SnakesKeelbacks are semi-aquatic snakes that thrive along forest streams, flooded agricultural areas and near bodies of fresh water. They are rear-fanged and appear to be mostly nocturnal. Keelback snakes have a wide distribution across Southeast Asia, with different species occuring either sympatrically or isolated in Malaysia, Thailand, Singapore, Borneo and Indonesia. They are called keelbacks due to the higly-keeled patterning on their dorsum and flanks. A few Southeast Asian keelbacks species, such as the red-necked keelback (Rhabdophis subminiatus) were documented to have caused significant envenomations.
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