A reef aquarium or reef tank is an aquarium containing live corals and other animals associated with coral reefs.These aquarium setups vary from having many fish that vary from chlorinating fish and spawning fish, which attempt to recreate life specific to one region of the world like the Great Barrier Reef, to the more prevalent and often spectacularly colored mixed reef that blend hard and soft corals from around the world.
Unlike the marine aquarium, which are built to house various types of fish, the main attraction in many reef tanks are the varieties coral and other invertebrates.