Colorful coral aquarium decoration makes your fish tank look vivid, add natural color and beautiful scenery. It is also a great hiding place for fish to play, adding more fun to their life The coral aquarium has 4 holes on the fish decor, your lovely Betta pet or fish other small fish would be super happy to go in and out of the trunk cave to sleep, rest, hide, play and rest Our coral ornament is made of eco-friendly silicone, non-toxic and safe for both freshwater and saltwater aquariums Strong one-piece construction, it features air holes and bathing chambers, provides a place to attach the nitrifying photosynthetic bacteria and create a healthy environment for your fish