- Multi-layer protection for fry survival: reduces fry loss and predation by providing a secure growth area. The design features honeycomb and fine hole baffles to create a protective environment for young fish. - Effective maternal care: offers a secure post-birth space for mother fish, enabling isolation and separate feeding of sick and young fish to support optimal nurturing. - Easy height adjustment: a flexible floating frame that can be raised or lowered to fit round, square, or irregular tank shapes. No suction cups required, simplifying positioning and stability. - Enhanced oxygenation and flow: 0.7 mm fine water-permeable grooves plus full water inlet coverage improve oxygen delivery and water movement, helping maintain strong water output and reduce hypoxia. - Compatibility and design: purpose-built as a breeding enclosure with a multi-layer structure, suitable for various aquarium setups where fry protection and maternal care are priorities. - Practical applications: 1) In a community or predator-prone tank, place the breeder box to shield fry during early development and promote higher survival rates. 2) After birth, use the enclosure to isolate the mother and provide separate feeding for sick or very young fish, improving care and recovery. 3) In tanks with irregular shapes or different dimensions, adjust the floating frame up or down to maintain a secure, stable enclosure without relying on suction cups.