Enhance the beauty of your fish aquarium with these exquisite Fish Aquarium Decorations. This cave, 3d printed in durable petg plastic, is perfect for indoor use and is designed to fit perfectly in any aquarium. The caves come with viewing holes that allow your betta fish and other aquatic creatures to be easily visible from outside. The black color of the caves adds a touch of elegance to your aquarium decor. These decorations are specifically created for aquariums and are recommended for use in fish tank occasions. Product dimensions are 1.5"D x 3.5"W x 1.3"H. Add a touch of sophistication to your aquarium with these Fish Aquarium Decorations.