What is a caddis-flie?

Answer 1

A caddisfly is an aquatic insect belonging to the order Trichoptera, known for its unique habit of constructing protective cases from materials found in their environment, such as twigs, pebbles, and plant fibers. The larvae are typically found in freshwater habitats, where they play a role in the ecosystem as decomposers. Adult caddisflies are characterized by their moth-like appearance and often have hairy wings. They are important indicators of water quality, as their presence can signify healthy aquatic environments.