Bottlebrush corals take their name from the cylindrical brushes on long
shafts often used to clean bottles. Bottlebrush corals are among the most
delicate SPS corals, and their fragility gives them an elegance that makes
them a favorite of advanced reef aquarium hobbyists. Among the Bottlebrush
corals, perhaps none is more beautiful than the Acropora
Echinata, sometimes found in an amazingly blue variety. These slow
growing corals can certainly be a valuable addition (as well as a costly
one) to a SPS reef tank.