An aquarium accessory shaped and dimensioned for sitting upon the upper edge of an aquarium frame to elevate the water level in an aquarium for viewing fish contained within the aquarium outside of the aquarium. The aquarium accessory includes a transparent container shaped and dimensioned to sit upon a support shelf in an inverted configuration for the creation of a mechanism for holding water above a water surface of the aquarium. The support shelf is shaped and dimensioned for mounting along a frame of an aquarium and includes a base member having a central aperture. The support shelf includes arms supporting the base below the waterline of an aquarium. The lower ends of the arms are connected to the base and the upper ends of the arms are secured to a lateral flange member extending therefrom, the lateral flange member includes first and second downwardly extending flange members shaped and dimensioned to wrap about the adjacent walls of an aquarium. The accessory further includes a hood which cooperates with the support shelf.
