This is a aquarium fish shelter decoration. Change your aquarium into a beautiful scenery. Create a natural and living environment for fish, and fish or shrimp love to go inside this and hide or to sleep. It is great to decorate your aquarium all the time with minimum responsibility and maintenance. Features - Color: Dark grey. - Material: Resin. - Size:18.8x10.8x8.2cm / 7.39x4.24x3.22inch. - There are some holes on the resin shelter, your lovely pet fish would be super happy to and out the stone cave to sleep, rest, hide, play, breed. - Very detailed, add underwater nature landscape to your aquariums, and you can easily to glimpse your little fish through holes. - Made of durable resin, friendly for all aquariums and fish. - Can be put in fresh water tank. - The ornament has a flat base, and is completely hollow, will sit stably on tank bottom, no floating over. Package list: 1 tank cave