Excellent imitation rock, artificial stone decorated with moss, transforms your aquarium into a beautiful scene. Provides a wonderful decoration for your aquarium, and also serves as an excellent hiding place for fish, adding more fun during play. This rock is made from advanced resin with high resistance to acids, corrosion, and is non-polluting and non-radioactive, etc. Suitable for both saltwater and freshwater. Completely safe for fish, as it will not die, rot, or cause algae Disorders. Suction cups can attach to the bottom/side of the tank to create a natural landscape.