the nearest tank is for Wagler's pit vipers, then the row for corn, milk and king snakes. The blue tank is for the pig-nosed turtle. The furthest tank (facing camera) is a king cobra. The mangrove snake walk-through entry and exit is on this wall too, next to the pig-nosed turtle.
See my review here:
http://www.zoochat.com/249/melaka-butterfly-park-visit-2-may-363177/