Give your fish something to do with the Penn Plax Terraces Style 2 Aquarium Décor. This terrace is great because it gives fish something to swim around and under while also provide something to hide behind. It"s crafted of non-toxic resin that"s great for saltwater and freshwater aquariums. * Made of non-toxic and fish-safe resin * Suitable for both fresh and salt water aquariums * Highly detailed, lifelike appearance * Gives pets a perfect place to hide and play * Dimensions: 11.5L x 6W x 5.25H in.