The biOrb Stackable Rock Sculpture is inspired by the rocky outcrops of the lakes of Sulawesi Indonesia. This stepped structure creates natural retreats and grazing platforms for shrimp and shy fish. The design is hand crafted by aquatics decor designer Samuel Baker. Simply slide over the bubble tube in the biOrb aquarium. It is easy to fit and remove. This sculpture is designed especially for the biOrb FLOW aquariums, but it is also suitable for 8 gallon / 30 liter biOrbs and larger and is 6.69 inches / 17 cm tall. Gender: unisex.