Uxcell Soft Silicone Coral Sea Urchin Fish Tank Decor, Orange/White Which fishes can eat or uproot; Ceramic base hold gravel to firmly keep the plant in place Product Name : Coral Ornament; Material : Soft Silicone Material: Ceramic Color : Orange, White; Diameter(Approx.) : 8cm/3.1" Height(Approx.) : 6cm/2.4"; Base Diameter : 3.5cm/1.3"