There’s been a lot of speculation and suggestions on why the Zodiac section starts with Pisces instead of Aries. If you look at the Zodiac Nymph Overview file I mentioned below, you notice there are more aspects (details? characteristics?) to the Pisces, Aries, and Taurus folios than any of the others. My idea is that it starts with Pisces simply because that sign is involved with the information shown (i.e. of interest to the Author) , and having it several folios away would be inconvenient.
I’m making modifications to the Nymph Overview file, and will replace the one there shortly. I’m adding another table with my ideas for the meanings.
As I mentioned below, I recently had the idea that the stars with a tether in the Zodiac section might represent a comet’s path through the sign.
I think folio f68r2 shows the comet C/1490 Y1. It passed through Pisces in January of 1491, and its tail passed through Aries. There are 29 stars with tethers in the Pisces folio, along with 12 in Aries Dark and 4 in Aries Light.
I also think f67r1 shows a total solar eclipse in Pisces in 1485. In that case, if each nymph is 1° of the sign, the cans might indicate that the sun “covered up” the sign.
I uploaded to my MediaFire folder a file, Zodiac Section Nymph Overview, that lays out their characteristics.