Optimized Size: Measuring approximately 20.5cm, the breeding box fits seamlessly into most aquarium environments. Material: Constructed from , reliable plastic with a long service life for consistent use. Easy Setup: Comes with a full set of components including fixing brackets for swift assembly. Versatile Application: Ideal for isolating aggressive, injured, or small fish, as well as shrimp and sea clownfish. Breeding Box Aquarium, Dual-Layer Design: Features a double-layer isolation incubator, providing a safe haven for born fish and injured species. It's DIY kits, needs to finish by yourself. Size:20.5x9.5x12cm (after assembly) Principle:The product consists of 2 boxes, which can be separated. Using the air-lift principle of the water fairy, the young fish are separated into small boxes for easy feeding and care. It needs to be connected to an air pump to have the self-separation function. Note:The 2 long metal objects are used to hang the hatching box. You can fold it yourself to the height you want to hang it. Colour:As Shown Material:plastic Package Contents: 1 x Mini Breeding Fish Tank Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.