Decorative plants for artificial rock and fish ponds are often chosen for their ability to complement the naturalistic aesthetic of the setup. These plants can include aquatic vegetation like water lilies, lotus flowers, and reeds, which not only enhance the visual appeal but also contribute to the pond's ecosystem. Terrestrial plants such as hostas, ferns, and ornamental grasses can also be used to create a transition between the pond and the surrounding landscape. It is important to select plants that are suitable for the pond's specific conditions, such as water depth, pH level, and light exposure.