Natural Aquarium Caves: The aquarium cave is made of ceramic with the function of filtering water, with very flat and smooth edges,, and definitely very safe for your fish. Imitate the natural stone texture to create a more natural visual effectAquarium Decoration Rocks: This hideaway cave provide visual feast for you and a house for your fish. The rock caves allowed to stop in for a visit or a hideaway to rest or hide reducing stress and minimizing aggressionPractical Decorations Cave: The hollow caves not only does this piece compliment the interior dcor of many modern homes, it also provide shelter, hiding spots, and spawning, privacy for your fish, like Crayfish, Shrimps, Betta, Cichlid, Hermit Crabs, or other Small fishEasy To Clean: Simply wipe down and rinse off ornament with warm water. Never use soap, as the residual soap particles can harm your fish. It is safe for both freshwater and saltwater aquariums