Aquarium Decoration: Trunk Aquarium is suitable for placing in the aquarium. The tree branches are designed with green moss on it, which is natural and realistic. Providing an excellent habitat for fish, and create beautiful and colorful decorations for the aquarium, and turns the aquarium into beauty Scenery. Safe Material: Betta Fish Ornament is made of safe and non-toxic resin material, which will not fade or change color when soaked in water. Insoluble in water, environmentally friendly and will not release any harmful substances. Causing no harm to fish and water and can be used in fish tanks for a long time. Tree Hole Design: There are many holes in the Stone Rocks Fish Tank Decoration Set. The fish can be hidden in the cave or used as a habitat or playing place. Soaking Time: Please soak in water for 10-15 minutes before using the Marine Fish Tank Aquarium Ornament. Suitable for freshwater environment. Put the fish in a fish tank or aquarium to allow the fish to shuttle freely and add natural flavor to the fish tank. Value Combination: You will receive 2pcs Fish Hiding Cave Aquarium, the size is 15*5*7cm, please check the size of the fish tank before buying.