Aquatic insects are insects that live in or near water during part of their life cycle. They can be found in various freshwater habitats, such as rivers, lakes, and ponds. Common examples include dragonflies, mayflies, and water beetles. These insects play essential roles in the ecosystem, serving as food for fish and other wildlife. Many aquatic insects undergo a process called metamorphosis, which includes distinct life stages: egg, larva, pupa, and adult. The larval stage often occurs underwater, where they feed on algae, detritus, or other small organisms. This feeding behavior helps maintain water quality and supports the food web in aquatic environments.