The Penn Plax Tree Trunk Aquarium Décor will add some rustic style to any aquarium. It"s crafted of fish-safe, non-toxic resin and offers plenty of room for fish to lounge in secrecy. * Crafted from strong and durable resin * Brings a natural and realistic appearance * Designed for both fresh and salt water aquariums * Provides your fish with an obstacle to swim around * Dimensions: 11.5Lx 7.5W x 10.5H in.