I haven't seen to many
but the ones i have seen
Green tree snake
brown tree snake
coastal carpet
Eastern brown
Red belly black
white crowned snake
blind snake
funny story about one of the red belly black snakes i've seen. was having lunch at work "construction site at amberley" everyone was having lunch and one of the guys pointed right next to the foreman and yelled black snake shoulda seen the foreman, ran about 50 metres down the road.
