Hamiledyi Aquarium Fish Breeder Box Isolation Box Breeder Hatchery Incubator Aquarium Fish Breeding Boxes Double Guppies Hatching Incubator Isolation Box This fish breeder box is made of acrylic materials.Unique floating and transparent plastic cover designed to prevent the fish out of the isolation room to protect the newborn fish It is a Hatchery for viviparous fish, such as bettas, guppies, medaka, ect. It can Prevent attack from adult fish, improve the survival rate of juvenile fish It can Separate aggressive fish, injured fish, small fish, shrimp, and other sea clownfish Easily attached to the top of your aquarium by the included suction cups. Safely separates new-born fry from other fish,improve the survival rate of juvenile fish.