Erpeton tentaculata; Print; Erpeton is a genus of water snake of the family Homalopsidae; which includes a single known species; the tentacled snake; Erpeton tentaculatum; which is native to South-East Asia. They are aquatic and extremely fast in catching their prey; small fish.The snakes accomplish the capture of their prey by cheating on a C-start escape reflex of the fish: after a fish approaches; the snake bends; and makes a quick movement with a measured segment of its body; startling the fish exactly in the direction of snake's head.; 1700-1880