Insects, then, are a major link in the food chain. These insects typically emerge from the water to become adults, going through various stages as they grow. Most insects go through either complete metamorphosis or incomplete metamorphosis. Incomplete metamorphosis is typical of many insects. This is where a freshly hatched insect does ressemble the adult stage in some but not all ways.
Dragonflies are good examples of incomplete metamorphosis.
At birth, the dragonfly ressembles the adult somewhat, but has no wings and slightly different mouthparts, and lives completely under water, unlike the adult who will never again swim. As it grows, it sheds or molts it's skin. During the last molt, the dragonfly sheds it's skin, but instead of stubs, it's wings unfold and it is finally ready to fly around and eat flies. Typically, insects that undergo incomplete metamorphosis are called nymphs , while insects that undergo complete metamorphosis are called larvae . Below are some of the more common aquatic organisms we typically find around the Fluvarium.