Rainforest offers hobbyists a montage of neo-tropical trees with a root like structure, creating an exotic tropical look that is ideal for all tropical fish as well as amphibians. Specifications: Average width ranges 3-4 inches. Recommended tank width: 10 inches and up. available sizes: 24"x16" 36"x20" 48"x20" 48"x24" 60"x24" 72"x24"