The origin of the Jesus fish is of the “occult” and/or pagan (astrology and sacred geometry) and goes back many centuries before the birth of the myth known as Jesus. (For more about this watch the film “Zeitgeist” or read the book: “The Christ Conspiracy: The Greatest Story Ever Sold” by Acharya S.)
The birth of the Jesus myth was the dawning of the Age of Pisces and we have been in the Piscean Age for about 2,000 years now. What this means is, at the vernal equinox, the sun has been in the astrological sign of Pisces during this period.
Jesus was born at the end of the Age of Aries and within a dozen years of his birth began the Piscean Age. So Jesus is referred to as the lamb because he was born in the Age of Aries (the Ram) and the fisher of men because his ministry began at the dawn of the Piscean age.
What does the astrological star configuration of Pisces represent? It is two fish.
The origin of the astrological symbol for Pisces is the vesica piscis.
Ichthys a symbol used by early Christians, more popularly known as the fish symbol is the almond shape created by the construction of a Vesica Pisces.
The Vesica Pisces is one of the most important geometrical images of ancient and modern times and is defined as a symbol made from two circles of the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. The name literally means the bladder of the fish in Latin.
In earlier times, this glyph was associated with the Goddess Venus, and represented female genitalia. Early depictions of Jesus show him as an infant within the vesica which represented the womb of Mary, the mother of Jesus.
Pythagoras (ca. 570 to ca. 490 BCE) considered the vesica piscis to be a holy figure. The mathematical ratio of its width to its height is the square root of three, and was believed by him to be 265:153. This ratio is an approximation of the square root of 3 which was thought of as a holy number and called the measure of the fish.
The number 153 appears in the Gospel of John (21:11) as the number of fish Jesus caused to be caught in a miraculous catch of fish.