Material: resin + plastic Colorful L: Size: 9.5 x 6.5 x 10 cm Features: 1. This product does not automatically glow in dark environments. It should be used with a lamp together to create fluorescent effect. The lamp with blue or white light is recommended. 2. It is made of eco-friendly material， so it will not to pollute the water and not damage the health of the fish.3. The base is equipped with a suction cup and can be applied to the bottom of the aquarium. Package size: 11 x 10 x 7.5 cm 1* coral