South Asian river dolphin The sphincter-like structure is capable of sensing light, and may be able to sense the direction from where the light was emitted. However, the muddy waters, or low light conditions, that the "Platanista gangetica" inhabit negate the use of the little vision that remains. The Ganges subspecies shows object-avoidance behavior in both the consistently heavily murky waters of its habitat and in clear water in captivity, suggesting that it is capable of using echolocation effectively to navigate and forage for prey. However, there is limited information on how extensively vocalization is utilized between individuals. This subspecies of river dolphin is
Asystasia gangetica that use "A. g. micrantha" as a larval foodplant; "Junonia oenone", "Junonia hierta", "Junonia natalica", "Junonia terea", "Protogoniomorpha parhassus", "Hypolimnas misippus" and "Microplexia costimaculalis". The vigorous growth of "A. g. micrantha" in tropical regions makes it a weed which can smother certain indigenous vegetation where it has been introduced. Asystasia gangetica Asystasia gangetica is a species of plant in the Acanthaceae family. It is commonly known as the Chinese violet, coromandel or creeping foxglove. In South Africa this plant may simply be called asystasia. This plant is a spreading herb or groundcover, reaching 600 mm in height or up to