Decorate your fish tank or animal habitat with a large Penn-Plax Granite Stone Aquarium Hideaway. Although this ornament is not made from granite, it resembles the real thing. Not only does this fish tank rock complement the interior decor of many modern homes, it also serves as a hideaway and swim-through for your fish. It's especially perfect for cichlid tanks, since they're territorial fish, and must create their own space. Stack or arrange these stones however you'd like within your tank. The possibilities and combinations are endless with this fish tank hideaway rock!