Colorful coral aquarium decoration makes your aquarium look vivid, adds natural color and beautiful scenery. It is also a great hiding place for fish to play, adding more fun to their life. The aquarium decorations have 4 holes on the rock fish decoration, your lovely pet betta or other little ones. fish would be super happy to go in and out of the trunk cave to sleep, rest, hide, play, breed Our resin cave shelter is made of eco-friendly silicone, non-toxic and free danger for freshwater and saltwater aquariums Solid one-piece construction, it has air holes and swimming chambers, provides a place for photosynthetic nitrifying bacteria to attach, creating an environment healthy for your fish If you have any problem with the aquarium coral decoration, please feel free to give us a message. We do everything possible to ensure that every customer is satisfied with our product and service