It`s a window to Captain Nemo`s world: The Aqua Vision Single Dome looks like a submarine portal with its magnified view of the huge 40 gallon tank. Gorgeous modern design includes sleek black base which holds the high capacity filter lighting and ai r pump leaving the sparkling tank for the included plants and not-included fish. Holds up to 40 gallons of fresh water and comes in your choice of flat or bubble dome window. If you had no other decorations in a room this striking aquarium would be e nough