Easy maintenance: Detachable box that disassembles for cleaning without the need for tools. Space saving and secure installation: Fixed inside the aquarium with two suction cups; double layer design helps maximize usable space without clutter. Versatile isolation box with a clear panel: The clear panel reduces the chance of fish jumping out while keeping a close eye on contents. Suitable as a spawning box for viviparous fishes and ideal for managing aggressive or injured fish. Safe breeding and easy monitoring: Provides a secure environment for small fish and fry, enabling convenient observation and care. Key features Detachable construction for quick cleaning and reuse Two suction cups for secure inside tank mounting Double layer design that conserves space within the tank Clear panel for visibility and jump prevention Suitable for isolation, spawning, and observation in small fish care Compatibility and use scenarios Inside most standard aquariums: attaches securely with two suction cups Scenario 1: Isolate aggressive tank mates or injured fish while the main tank continues to operate Scenario 2: Use as a spawning or nursery box for viviparous fishes, allowing safe birth and monitoring of fry Scenario 3: Create a controlled nursery area to observe small fry without risk of predation or escape Notes Detach and clean regularly to maintain clarity and performance No tools required for installation or removal Designed to provide a compact, practical solution for breeding, isolation, and observation within an aquarium ecosystem