Features: 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 small fish while monitors your baby fish easily. Space-Saving: Fix tightly to the inside of the for fishtank with 2 suction cups. Floating, double layer combination, saving space. Isolation Box: Unique clear panel, preventing fish jumping out. Can be used as the spawning box for the viviparous fishes. Especially great for aggressive fish or injured fish. Specifications: Component: Plastic Size: Approx. 3.94x5.71inch Package Includes: 1 Set Aquarium Breeding Box note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color