A fish live box has a frame assembly supporting a mesh screen surrounding a chamber for accommodating fish. A minnow cage is located in the chamber. A top wall and door closes the top of the frame assembly. Brackets mount the fish live box to a dock. Upright legs mounted on the frame assembly are vertically adjustable to locate pads on the bottom of the legs on the bed of a body of water to support the fish live box on the bottom of a body of water.