Rotala rotundifolia, the dwarf rotala, is a plant species often confused with Rotala indica. It is sold in the aquarium trade, but is of uncertain status. It is a common weed in rice paddies and wet places in India, China, Taiwan, Thailand, Laos, and Vietnam, and has been introduced to the United States.
Rotala rotundifolia is a time-tested popular stem plant wonderfully suitable for aquascaping. Its emerged form has roundish leaves, in the aquarium they grow to a longer, narrow form. Compared with other Rotala species it is relatively undemanding. This highly variable species is widely distributed in the Asian subtropics and tropics; standard variants available in trade are light green to reddish under water, depending on the light intensity.