The Underwater Treasures Guppy Breeder is an easy to assemble, multi-purpose chamber. It is ideal for separating pregnant females from other tankmates, protecting new-born fry from potential predators, isolating injured of aggressive fish, and more! Includes 4 suction cups for convenient placement anywhere inside your aquarium. 6.3″W x 3.1″D x 3.1″H. 6.3″ x 3.1″ x 3.1″