This book has been produced with a great deal of ecological correctness and presents both: Native and imported species of crayfish and other decapods. It deals with keeping and breeding the species currently available in the zoo- and delikatessen-trade in aquaria and garden ponds, as well as the associated environmental problems. This book is aimed at nature and environmental enthusiasts, as well as aquarium and garden pond owners, who would like to take a closer look at decapod crustaceans. The book reflects the author's many years of experience with keeping and breeding various crustaceans. In addition, horseshoe crabs, as well as terrestrial and brackish water crustaceans are also presented. This also includes terrestrial hermits and the so-called cockroach-crabs of the genus Aegla.