A liquid delivery device includes a first nozzle row that has a plurality of nozzles in a predetermined direction and delivers a first liquid. A second nozzle row has a plurality of nozzles in the predetermined direction and delivers a second liquid having a concentration different from that of the first liquid. A controller forms first dots on a medium at predetermined intervals by delivering the first liquid from the plural nozzles of the first nozzle row without using a part of the nozzles of the first nozzle row, and forms second dots on the medium at the predetermined intervals by delivering the second liquid from the plural nozzles of the second nozzle row without using a part of the nozzles of the second nozzle row such that each of the second dots is located between the first dots in the predetermined direction.