Aponogeton natans is found in Sri Lanka and India. Its leaves are mostly floating, with only the long slender petiole below the surface of the water. This growth pattern blocks light to the other plants in the tank and therefore may not be suitable if low level high-light demanding plants are desired. The strong point of Aponogeton natans is its extreme hardiness. It"s been used by growerers to create hybrids that have the decorative characteristics of other species, but are less likely to go dormant under aquarium conditions.