- Superior swimming space and space saving mounting: The breeding box attaches with two suction cups and can be mounted inside or outside the aquarium, staying above the water line to save space. The scale plate and two handles allow easy size adjustment for optimal breeding conditions. - For different aquarium and fish sizes: Available in three sizes to fit varying tank and fish dimensions, delivering a safe and comfortable environment for new fish to thrive. - Multifunctional breeding box: Protects fry and shrimp from aggressive or injurious tank mates. Removable dividers and a small groove add versatility for configuring separate compartments as needed. - Effortless, tool-free setup: Install and remove quickly with two suction cups. No heaters or air pumps required, since the box hangs securely in your tank. - Use scenario 1: Breeding or rearing fry (eggs or small juveniles) in a dedicated, protected space within a community tank, with adjustable size to match the growing fry. - Use scenario 2: Isolating newly added fish or vulnerable shrimp from established tank mates to reduce stress and aggression during acclimation. - Use scenario 3: In small or nano tanks, choose one of the three sizes to fit the tank footprint and fish size, providing a stable, contained environment without clutter.