If your Rising Sign (Ascendant) is Pisces, then your Setting Sign (Descendant) will be the opposite sign .... Virgo.
It is impossible to have Libra setting is Pisces is Rising.
You have to have Aries Rising in order to have Libra setting.
So something is wrong with the calculation of your birthchart, or perhaps it is not clear what your Setting sign is in that birthchart.
For a free, reliably accurate birthchart I recommend alabe.com (they make and sell "Solar Fire" software, which is one of the top programs used by professional astrologers).
To do up anyone's birthchart you need to enter:
- their day, month, year of birth
- the exact hour and minute that they were born
- the birth location
No real astrology can be done without this. The "astrology" of "your sign" is just a gimmick to make money writing for people who don't understand astrology.
As for your Ascendant and Descendant, these the are starting places ("cusps") for your 1st and 7th Houses, respectively.
In astrology we are our 10 "planets", and Houses are not planets.
Each planet indicates a different facet of our personality.
Houses are areas of life, and the sign ON a House indicates the way in which we approach that area of life .. but this is not part of our inner self.
As for the term "zodiac" this refers to the apparent path in the sky, upon which all of the "planets" (including Sun and Moon) appear to move.
This ring is broken into 12 equal divisions, called "signs" or "zodiac signs".
Everyone has EVERY zodiac sign in their birthchart.
As I said, we ARE our planets ... representing different inner needs, different facets of our personality.
The sign that a planet was moving through when we were born indicates the general style for that facet. Signs are styles of behavior. And we all have every sign in our chart, so we all have every possible behavior. But when there is a planet IN a particular sign, we are MORE likely to use THAT particular style of behavior.
You ask:
Do you fall under a undefined zodiac? No.
What is your zodiac? The way you word it, that is not a valid question.
Do you have a zodiac sign? You have ALL 12 zodiac signs in YOUR chart.
What confuses a lot of people is that they think they ARE one sign. What scammers call your "zodiac sign" is only your SUN's sign. Sun is your need to like yourself, and whatever sign Sun is in, that is the style of behavior that helps you feel whole inside.
But Moon is your emotional nature.
Mercury, your mind and communication\
Venus, your relating needs and style.
Mars, how you take action to get what you want, and how assertive or aggressive you may or may not be.
And there are 5 more planets as well, each representing a different part of your nature.