1Made of resin material, safe in fresh water or salty water and will not fade, very durable. 2Ideal for fresh and salt water aquariums, better to decorate your aquarium. 3It can pretty up your fish tank and makes your tank look a lot more fun, also catch your fish's eyes. 4Durable& Steady- The aquarium decor ornaments' flat bottom and its weight is heavy enough to have it stand steadily at one place of your fish tank. All you have to do is to choose a place to put, no further adjustment needed. 5Provide shelter for fish, like natural textures, imitating real river rocks, suitable for raising or providing shelter.