1. Unique Shape: The artificial mountain and simulated volcano are made of resin, presenting a natural and magnificent scenery for the fish tank, enhancing its ornamental value. 2. Practical Function: It is designed to be able to install an oxygen pump. While beautifying the fish tank, it ensures the oxygen supply in the water, which is beneficial for the survival of fish. 3. Exquisite Craftsmanship: As a home decorative craft ornament, it is finely crafted with safe materials and can be placed in the aquarium for a long time without being easily damaged.