Aquatic plants. The red type is called Rotala. It has roots that anchor to the ground. The length starts from approximately 4 cm for 5 riyals per unit. The green plant is called Fox Tail. It is a fast-growing plant and excellent for absorbing ammonia and purifying water. Both plants are beneficial, not just for appearance, but they also benefit your aquarium. The Fox Tail does not have roots; you can let it float in the aquarium or plant it in the ground. The length of the Fox Tail is approximately 5 cm for 5 riyals per unit. Whoever buys a quantity will not be disappointed.