Multi-layer Fry Protection - Features multi-layer protection to reduce fry loss, boost survival rates, and prevent predation. The design includes meticulously designed honeycomb and fine hole baffles to create a secure growth environment for fry. Effective Maternal Care - Provides a secure space for mother fish after birth. Enables isolation and separate feeding of sick and young fish for optimal nurturing and care. Easy Height Adjustment - The flexible floating frame allows easy up and down adjustment to fit various tank shapes, including round, square, or other variants. No suction cups required, making setup and adjustment straightforward. Smooth Oxygenation Enhancement - 0.7 mm fine water-permeable grooves combined with full water inlet coverage improve water flow and oxygenation, helping maintain strong water output and reducing hypoxia risk. Use scenarios - Breeding livebearers and managing fry: place newborns in the enclosure to reduce predation and improve survival while the mother is cared for separately. - Post-birth or illness management: isolate sick or weak fry and provide dedicated feeding and care within the enclosure. - Flexible setup for different tanks: adapt easily to round, square, or other shaped tanks with the adjustable frame, avoiding the need for suction cups.