【Material】: Inverted above water fish tank is made from high-quality acrylic material, this fish tank boasts a high transparency that allows you to clearly observe your aquatic pets. 【Design】: This aquarium features a unique negative pressure design, providing an interesting and creative landscape for your small fish. 【Feature】The fish tank is also the automatic water replenishing device on the level of the fish tank, it will automatically add water to the fish tank as the water evaporates, keeping the overall water level of the fish tank constant. 【Easy to Clean】: The aquarium is designed with detachable parts for easy cleaning, ensuring a healthy and clean environment for your fish. 【Compact Size】: With dimensions of 13*13*16cm, this small-sized aquarium is perfect for desks or small space while still providing ample room for your fish to swim around. Specification: Material: Acrylic Size Chart: 13cmx13cmx16cm/5.12inchx5.12inchx6.30inch Package Includes: 1 Set Fish Tank Note: Please allow slightly errors due to manual measurement and different monitors.