Here we see a depiction of a Dagon priest. Notice that he is sprinkling 'holy water' just like the cult priests of The Universal Roman church and her daughter protestant churches.
The fish headdress of the priests of Dagon later became the model for the miter (headress) of the Christopagan bishops.
The Christopagan history of the fish symbol:
The fish symbol has been used for millennia worldwide as a religious symbol associated with the Pagan Great Mother goddess. It is the outline of her vulva. The fish symbol was often drawn by overlapping two very thin crescent moons. One represented the crescent shortly before the new moon; the other shortly after, when the moon is just visible. The Moon is the heavenly body that has long been associated with the goddess, just as the sun is a symbol of many pagan gods.
It is commonly admitted that the name Dagon is a diminutive form, hence a term of endearment, derived from the Semitic root dag, and means, accordingly, "little fish". The name, therefore, indicates a fish-shaped god. The Bible, also, suggests (1 Samuel 5: 1-5) he had face and hands and a portion of his body resembled that of a fish, in accordance with the most probable interpretation of "the stump of Dagon" (verse 4). From the received text of the Septuagint it would seem that he even possessed feet, and the description found in the Bible coincides with that which may be seen on the coins of various Philistine or Phoenician cities, on most of which Dagon is represented as a composite half-man and half-fish figure, human as to the upper part of the body, fish-like as to the lower. From this it may well be inferred that Dagon was a fish-god, a fact not in the least surprising, as he seems to have been the foremost deity of such maritime cities as Azotus, Gaza (the early sites of which are supposed to be buried under the sand-mounds that run along the sea-shore), Ascalon, and Arvad.
Dagon is sometimes associated with a female half-fish deity, Derceto or Atargatis, often identified with Astarte (Ishtar, Isis, etc ). Thus the mermaid myths of ancient sailors.
The link between the goddess and fish was found in various
areas of the ancient world:
In Greece the Greek word "delphos" meant both fish and womb. The word is derived from the location of the ancient Oracle at Delphi who worshiped the original fish goddess, Themis. The later fish goddess, Aphrodite Salacia, was worshiped by her followers on her sacred day, Friday. They ate fish and engaged in orgies. From her name comes the English word "salacious" which means lustful or obscene. Also from her name (Aphrodite) comes the name of our fourth month, April. In later centuries, the pagan christian catholic church adsorbed this tradition by requiring the faithful to eat fish on Friday - a tradition that was only recently abandoned.
In ancient Rome Friday is called "dies veneris" or Day of Venus, the Pagan goddess of Love. The fish symbol "was so revered throughout the Roman empire that pagan Christian authorities insisted on taking it over, with extensive revision of myths to deny its earlier female-genital meanings. Sometimes the pagan christ child was portrayed inside the vesica, which was superimposed on Mary's belly and obviously represented her womb, just as in the ancient symbolism of the goddess."
In China, Great Mother Kwan-yin often portrayed in the shape of a fish.
In India, the goddess Kali was called the "fish-eyed one."
In Egypt, Isis was called the Great Fish of the Abyss.
In the Middle East, the Great goddess of Ephesus was portrayed as a woman with a fish amulet over her genitals.
In Scandinavia, the Great goddess was named Freya; fish were eaten in her honor. The 6th day of the week was named "Friday" after her.
The symbol itself, the eating of fish on Friday and the association of the symbol with deity were all taken over by the early catholic church from Pagan sources. Only the sexual component was deleted.
1 Samuel 5
Now the Philistines had taken the ark of Yahweh, and they brought it from Eben-ezer to Ashdod.
2 The Philistines took the ark of Yahweh, and brought it into the house of Dagon, and set it by Dagon.
3 When they of Ashdod arose early on the next day, behold, Dagon was fallen on his face to the ground before the ark of Yahweh. They took Dagon, and set him in his place again.
4 When they arose early on the next day morning, behold, Dagon was fallen on his face to the ground before the ark of Yahweh; and the head of Dagon and both the palms of his hands lay cut off on the threshold; only the stump of Dagon was left to him.
5 Therefore neither the priests of Dagon, nor any who come into Dagon's house, tread on the threshold of Dagon in Ashdod, to this day.