This fish tank decoration is not only a betta fish rest bulb but also a perfect shrimp hide. It provides your fish with a private place to hide and relax. It adds an interesting landscape to your fish tank and is suitable for both freshwater and saltwater. This fish tank bulb is made of non-toxic and odorless plastic, ensuring the health of your fish. The suction cup at the side makes it easy to attach to the tank wall, and the small holes allows water to circulate and plants to grow into the hide. This fish tank cave is a great addition to your fish tank and will make your fish feel safe and secure.