Abstract: A portable bait tank is provided with an exteriorly mounted aerator pump mounted within a protective cavity of the body of the tank. The bait tank also includes a molded in filter box plus a lid for housing a gravity filter and an aerator. An auxiliary, valve-operated pump-out port enables the pump to expel water from the bait container. The valve for the pump-out port is operated by moving the aerator head between a circulating position and a pump-out position. The bait tank also includes an access port that has splash-inhibiting lips that extend downwardly into the container formed by the tank body and a deep-seated oxygen bottle holder and accompanying orifice for the oxygen bottle tubing.