Lucky Critter Aquarium Underground Tunnel Cave | Viewing Fish & Shrimp Under Gravel Tunnel | Fish Tank Decor Decoration Hideout Perfect for Corydora Catfish, Kuhli Loach, Clown Loach, PlecoBrand: Lucky Critter Color: Black Features: The perfect Aquarium Underground Tunnel Cave for many types of fish such as Pleco, Loaches, Corydora Catfish, Betta 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 incredible viewing experience for the fish tank owner. This addition to an aquarium aquascape