PRACTICAL AND CONVENIENT- This aquarium fish breeding box with lid is made of transparent plastic, which allows you to easily and freely observed when your fish goes into labour or is ready to birth, and you can feed the fish from the two holes on the top cover without taking the lid off.Small plants are perfect for the baby fry to hide in.Double Layer Isolation& Protect fish eggs - plastic fish breeding box is designed with two separate areas for isolating mother fish and baby fish, the dual-V-shape divider in the middle of breeder box has two slits, so that the baby fish can fall to the bottom areas from mother, protect new born fry from being eaten and improve the survival rate of the baby fish.Maintain Ecological Cycle - The many openings along the sides of the baby fish hatchery tank allow sufficient exchange of water with the main tank so it stayed pretty clean, the grating in the bottom prevents soiling of the box by food residues and excrement. Only 1mm slits prevent fry from getting out, so you dont need to worry about water parameters of breeding box or any additional equipment.Space-saving & Self-floating -Fry Breeding Box can be firmly fixed on the inside wall of the aquarium with the suction cups. Double-layer combination does not occupy space, you can adjust its position wherever you want to save space. It does not sink and easy to feed and clean.Wide Application -Our acrylic fish isolation box is very suitable for isolating new born fish, fish egg, pregnant mother fish, injured fish, aggressive fish, shrimp etc., great incubator tank for live viviparous fish, like guppy, molly and other tropical Fish.