Jung is all about fishes and Christ’s older brother Satan in his book Aion, but there are little bits and pieces of strange beauty in his collection of ancient symbols and myth motifs. (Rather like Hamlet’s Mill – the book is hard to read, but fun to browse through.)
The Nimrod Christmas story is disinfo but there WAS a Christmas (New Year’s, really) baby prior to Christ, as Jung reports. Aion’s holy day represented the end of his cult’s New Year’s celebrations.
I copied and pasted this, below, from another site and edited it down. (Don’t care about fishes!) Note that ‘Jesus’ and ‘Joshua’ are the very same name. (The Septuagint uses the same Greek word for both men’s names.)
From Aion by Carl Jung:
The Christmas message, (the virgin has brought forth, the light increases), is pagan. Speaking of the so-called Korion in Alexandria, Epiphanius 6 says that on the night of the Epiphany (January 5/6) the pagans held a great festival: They stay up the whole night singing songs and playing the flute, offering these to the images of the gods; and, when the revelries of the night are over, after cock-crow, they go down with torches into a subterranean sanctuary and bring up a carved wooden image, which is laid naked on a litter. On its forehead it has the sign of the cross, in gold, and on both its hands two other signs of the same shape, and two more on its knees; and the five signs are all fashioned in gold. They carry this carved image seven times round the middle of the temple precincts, to the sound of flutes and tambourines and hymns, and after the procession they carry it down again into the crypt. But if you ask them what this mysterious performance means, they answer: Today, at this hour, the Kore, that is to say the virgin, has given birth to the Aeon.165 Epiphanius expressly states that he is not telling this of a Christian sect, but of the worshippers of idols, and he does so in order to illustrate the idea that even the pagans bear involuntary witness to the truth of Christianity.166 Virgo, the zodiacal sign, carries either a wheat-sheaf or a child. latent, and only then does his missionary work begin.
…Christ was born at the beginning of the aeon of the Fishes. It is by no means ruled out that there were educated Christians who knew of the coniunctio maxima of Jupiter and Saturn in Pisces in the year 7 B.C., just as, according to the gospel reports, there were Chaldaeans who actually found Christ’s birthplace. The Fishes, however, are a double sign.At midnight on Christmas Eve, when (according to the old time-reckoning) the sun enters Capricorn, Virgo is standing on the eastern horizon, and is soon followed by the Serpent held by Ophiuchus, the “Serpent-bearer.” This astrological coincidence seems to worth mentioning, as also the view that the two fishes are mother and son. The latter idea has a quite special significance because this relationship suggests that the two fishes were originally one. In fact, Babylonian and Indian astrology know of only one fish. 30 Later, this mother evidently gave birth to a son, who was a fish like her. The same thing happened to the Phoenician Derceto-Atargatis, who, half fish herself, had a son called Ichthys. It is just possible that “the sign of the prophet Jonah” 31 goes back to an older tradition about an heroic night sea journey and conquest of death, where the hero is swallowed by a fish (“whale-dragon”) and is then reborn.32 The redemptory name Joshua 33 (Yehoshua, Yeshua, Gr. lesous) is connected with the fish: Joshua is the son of Nun, and Nun means ‘fish.’
…Being the twelfth sign of the Zodiac, Pisces denotes the end of the astrological year and also a new beginning. This characteristic coincides with the claim of Christianity to be the beginning and end of all things, and with its eschatological expectation of the end of the world and the coming of God’s kingdom.49 …
…to my knowledge, there is no evidence in the old literature that the Christian fish symbolism was derived from the zodiac.
Aion is said to be the son of Zeus. He represents Time and Eternity. Associated with mystery religions and mother goddesses. Often shown as a nude or semi-nude young man standing within a circle.
Aion article on wikipedia: https://en.wikipedia.org/wiki/Aion_(deity)