1 Samuel 5:2

When the Philistines took the ark of God, they brought it into the house of Dagon, their chief idol, to whose honor they had erected sanctuaries in all their principal cities, Judges 16:23, and set it by Dagon, near the picture or statue of this deity, which had a human head and hands, but a fish-body, to symbolize the fruitfulness of the sea, as represented by the fish.