Qpets breeding box for fish creates a dedicated space for fry and small aquatic animals inside the main aquarium. This fish breeding box aquarium design helps keep young guppies and vulnerable fish away from larger tank mates while maintaining water flow.Use it during spawning, fry care, short-term fish isolation, or when introducing a smaller fish to a community tank. The floating in-tank format suits home aquariums and supports convenient observation without moving fish to a separate setup.Unlike a basic fish tank separator, the mesh-sided fish isolation box provides a contained area with visibility and circulation. Suction cups help position the box against the tank wall, while insert panels divide the space as needed. Nylon mesh and plastic panels support repeated aquarium use.Size: 16 * 14 * 15cm. Secure the suction cups to a clean glass surface before adding fish. Check the mesh and fittings regularly, remove uneaten food, and rinse with aquarium water during routine maintenance. Allow the box to settle before placing delicate fry inside.