This transparent isolation box is a perfect tool for breeding juvenile fish. It can be also used for preventing adult fish attack so as to improve the survival rate of juvenile fish. Features: Can be used as the spawning box for the viviparous fishes. Prevents adult fish attack so as to improve the survival rate of juvenile fish. Isolation function: can isolate aggressive fish, injured fish or small fish. Unique transparent cover design, preventing fish jumping out of the box. High quality suckers can used to fix the product conveniently. Floating design, double layers combination, saving space. Color: Transparent Material: Acrylic Size(L x W x H): Approx. 10*7*13cm/ 3.94 x 2.76 x 5.12 inch Package includes: 1 x Aquarium Fish Breeding Incubator Tank. Colour of the Suction Cups may vary. Usage Assembly Instruction : Unwrap the package, Put the 2 Suction cups in the top 2 suction cup holes of the body of the item, Then, place the transparent fish chamber separator (which will separate the female fishes from the babies) in the center and lastly the transparent top cover lid in the top of the incubation breeder box. Once all correctly assembled it should look like the primary image as shown in the item page. Gently put the breeder box in tank and the suction cups will attach into the glass surface by applying slight pressure with the glass body. Please clean the glass properly where the suction cups is to be placed else the suction cups might come off.