Abstract: An automatic feeding apparatus including a body member for being coupled to an aquarium, a hopper for receiving a canister of fish food, a valve device movably coupled within the body for periodically receiving the fish food in a first position and for discharging in a second position the fish food into the aquarium. An actuating device is provided for continuously rotating the valve between the first and second position. A clutch is interposed between the actuator and the valve for allowing the operational position of the valve to be continuously adjusted between the first and second positions, whereby the exact discharge time of the food into the aquarium may be adjusted. A plurality of time striations are included on the body member and a time indicator is coupled to and rotates with the valve so as to indicate the relative time interval before the discharging of the fish food.