Abstract: An aquatic animal feeding assembly for use with aquariums, tanks, pools or the like. The feeding assembly (4) comprises an outer magnet (34) placed adjacent an outer surface of the aquarium wall (14) and an inner magnet (32) placed opposite the outer magnet on the inner surface of the aquarium wall such that the magnets attract to each other against the aquarium wall. A food holder (42, 60, 70) is attached to the inner magnet within the aquarium for releasably holding food within the aquarium. The magnets generate an attractive magnetic force sufficient to hold each other in place opposite the aquarium wall. In addition, the outer magnet may be moved along the aquarium wall to thereby move the inner magnet and the food holder to a desirable location within the aquarium.

Abstract: A worm trap for use in an aquarium for trapping worms. The worm trap includes a tube assembly having a pair of openings at the ends of the assembly. A chamber is located within the assembly and is adapted to contain a food morsel. At least one end wall of the chamber communicates with the interior of the tube assembly to allow the aroma of the food morsel to enter the tube assembly so that a worm will be attracted to the aroma and be trapped in the tube assembly. The opening in the chamber is sufficiently small to prevent the food morsel from being carried out of the tube assembly by the worm.

Abstract: An improved tank assembly comprising a number of tanks. One of tanks holds the parent fish and has structure for allowing fish larvae to flow into another tank. In the second tank, the fish larvae can circulate and continue to grow. Food is circulated in the tank assembly, and the food particles are collected and prevented from draining out of the tank assembly. The second tank is preferably a circular tank and, once the larvae are in the circular tank, the water current can be adjusted to meet the needs of the fish. This is achieved by an air lift tube carried by the circular tank. The air lift tube operates to exchange water periodically in the circular tank. The air lift tube also pumps live food into the circular tank.