The most common plants found in fresh water lakes are often used in fresh water fish tanks, backyard pools.. These are Waterweed, (Elodea canadensis), and the Elodeas (Elodea), which has tiny flowers that float on the surface of the water, and have buoyant stems.
Another common plant is Water Celery (Vallisneria americana). It's leaves are long and slender and float up from the plant submerged, but reaching for the surface of the water.
PondWeeds (Potamogeton illinoensis) are one of the most important flowering plants for the ecology of fresh water lakes and are a vital food source for waterfowl, as wellas, many forms of aquatic life. Fish and frogs, snakes and snails are among the many that feed and breed among their leaves.
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Common Water Plants used in Aquariums 
