Features: Suitable for all kinds of aquarium, cold water, tropical and marine fish. Ideal for saving fry in your aquarium from other fish. Easy to assemble, the net breeder provides security for fry or even sick and injured fish. Hangs on the side of most glass aquariums fine mesh to keep fry protected. Installation: 1.Insert four cylinders into the four corners of the upper and lower frame. 2. The fine mesh is placed from the bottom up to the entire box. 3. Insert the four suction cups into the round holes of the upper frame. 4. Put the isolation net into the water and adsorb it on the glass. The water level should not exceed the upper frame. Package Include: 1 x Aquarium Breeder Box 1 x Nylon Net 4 x Suction Cup