Feeling of natural surroundings: Cygnet provides a feeling of natural environment, perfect for home aquariums, turning your fish tank into a beautiful landscape. Non-toxic resin plastic material: This aquarium ornament is made of non-toxic resin plastic material. toxic, safe for freshwater and saltwater aquariums. The ornament has a solid base: once you put it under water, you don’t have to worry about it floating. Dimensions: the cave measures approximately 5.1 inches (H) x 4.7 inches (W) x 3.1 inches (W), so it will easily fit into almost any large home aquarium. It is designed to be the perfect accent for any aquarium, large or small. Get creative! Fine Bubbles: Decorative artificial resin bubblers not only add beauty and vibrancy to your tank, but also help increase water circulation. In nature: suitable for adults and children! This fun aquarium decoration will instantly add magic to your aquarium! Most small to medium sized fish can fit in and let them swim in and around. It