Easy Use: Detachable box, easy to disassemble and clean. A separating hatchery for pregnant fish, protecting new born fish from being attacked, improving the survival rate of newborns fish. Creates a safe and secure breeding box for while monitors your baby fish easily. Space-Saving: Floating, double layer combination, saving space. Isolation Box: Unique clear panel, fish jumping out. Can be used as the spawning box for the viviparous fishes. Especially great for aggressive fish or fish.