The perfect Aquarium Underground Tunnel Cave for many types of fish such as Pleco, Loaches, Corydora Catfish, Fish, Shrimp and much more! Easy install by moving substrate out of the way placing against the glass and moving the substate back around the cave. While being a great place to hide it also provides an viewing experience for the fish tank owner. This addition to an aquarium give the ability to view fish in an entire way in their natural environment. The Aquarium Underground Natural Curve Tunnel Cave was made with natual cave insirpation in mind. The curve of the aquarium tunnel provides a natural look that blends into the aquatic habitat. The Aquarium Underground Tunnel Cave is made with aquarium safe plastic. It also sink to the bottom of the aquarium so no need to try and bury it in the sand if not wanted. Color:Black & White Material:ABS Package Contents: 2 * Aquarium Underground Tunnel Cave Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.