yehudayona:
Your right. One of the reasons is because of the Greek word for fish is ichthus.
There are others reasons.
One of them has to do with the fact that many of Mattis’s ym”sh Shluchem were fisherman. Till today their Pope wears the Ring of the Fisherman.
As for its Pagon orgins. Do a search on google. I dont think here is the place for their “Shtusem”.
I agree 100 percent with “ales mit cavuneh”
Why dont you ask a Rabbi and clear up this issue for us.
Why “hack” around just ask a Rov for the Truth.