Caddisflies are aquatic insects belonging to the order Trichoptera. They are commonly found in freshwater habitats, such as streams, rivers, and ponds. Caddisflies are known for their unique larvae, which often construct protective cases from materials like sand, twigs, and plant debris. These cases help shield them from predators and environmental factors. Adult caddisflies resemble moths and have two pairs of wings covered in fine hairs. They are typically active during the evening and are attracted to lights. Caddisflies play an important role in aquatic ecosystems, serving as both prey for fish and indicators of water quality.