Isolation Box with a unique clear panel prevents fish from jumping out, making it suitable for spawning and quarantine needs for aggressive or injured fish. Safe breeding box for viviparous fishes, providing a controlled environment that helps protect the parents while enabling easy observation of the fry. Monitors baby fish easily: the design allows you to keep an eye on newborns while they are safely housed. Spacesaving interior mounting: attaches inside the aquarium with three suction cups; floating doublelayer construction keeps the rest of the tank uncluttered and maximizes usable space. Separating hatchery for pregnant fish: protects newborns from being attacked after birth and helps improve the survival rate of the fry. Easy installation and removal: designed to fit most standard fish tanks, enabling quick setup and flexible use. Use scenarios Breeding and raising fry: use the isolation box as a spawning or nursery area for viviparous fishes, reducing predation and stress on newborns. Quarantine and recovery: place injured or stressed fish in the box to recover with minimized interaction with tank mates. Pregnancy and fry protection: employ the hatchery to separate pregnant fish and protect newborns immediately after birth, improving survival outcomes.