Bullet Points: 1.Optimal Fish Care: Promote your fish breeding, isolating, or domesticating game with our Fish Breeder Box. The white mesh design ensures maximum safety and security while giving you a crystal-clear view of internal conditions for your fish. 2.Effortless Assembly: Say goodbye to complicated setup. This fish breeder box easily attaches to your aquarium's top with its suction cup net and sturdy PP frame pillar for stable support. 3.Efficient Reproduction: Enhance fry survival by isolating aggressive or weak fish, aquarium breeding box ensures a high survival rate and safe breeding. 4.Impurity Prevention: By using a fish breeder box with ultra-fine mesh, you can ensure the safety of your fish while effectively breeding and avoiding contamination in the tank. 5.Isolation Savior: Our fish breeder box comes with an isolation function that keeps shrimp and small fish safe, preventing injuries from aggressive tank mates. Give your fish a functional haven. Our breeder box for fish tanks is perfect for those who want to breed, isolate or domesticate their fish. The pillar design not only prevents adult fish from attacking fry, but it also effectively helps you breed fish. With its isolation function, you can ensure the safety of your fry while they develop. A must-have for any fish enthusiast looking to care for their fish. Specification: Product name: Fish tank breeding isolation box Material: PP+Mesh Product size: Small size: about 16x14x15cm/6.3x5.51x5.91 inches Large size: about 26x15x15.5cm/10.24x5.91x6.1 inches Mesh aperture: about 1mm Packing List: 1* Fish Breeding Box Note: Due to different lighting and screen settings, the item color may be slightly different from the picture. Due to different manual measurements, please allow a 1-2cm difference in size.