Francis Knowles, Freshwater and Salt-water Aquaria, Londres, George G. Harrap & Co., 1963, pp. 76-77.
The body of a caddis-fly larva is white and soft, and were is not camouflage dit would attract the attention of fish, who would fin dit a succulent morsel. But usually the larvae are inconspicuous, for they gather together bits of sticks and stones and build round their bodies tubular houses within which they can retreat when danger threatens. When all is clear they move about, drawing their house with them, and pick up particles of debris from the bottom. For this reason there are interesting to watch and useful as scavengers in the cold-water aquarium.