Another fact is that adult dragonflies will devour just about anything they can catch. Dragonflies usually eat mosquitoes, bees, gnats, butterflies, termites, and other bugs. When they are in the nymph stage, they eat small fish, tadpoles, mosquito larvae, worms, and aquatic insects.
The animal kingdom, arranged according to its organization, serving as a foundation for the natural history of animals : and an introduction to comparative anatomy. Cuvier, G., Latreille, P. A. and McMurtrie, H. London, G. Henderson, 1834-1837.