Water on earth
Earth gives water a shape and water keeps earth from hardening. This is one of the more genuinely cooperative element pairs, and it shows up in the ordinary business of living together: Taurus supplies the routine, the meals, the fixed address, and Pisces supplies the sense that none of it is merely functional.
Both are also sensory signs. Comfort, food, music, touch and the physical quality of a room matter to each of them, and agreeing about that removes a source of tension that many pairings never resolve.
Fixed and mutable, sixty degrees apart
The sextile is a workable angle rather than an easy one; it offers something and requires the two to take it up. The modality does most of the work. Taurus holds and Pisces adapts, so the pairing has one anchor and no counterweight to it.
That means Taurus effectively sets the terms. Pisces does not contest them, which looks like harmony and can be something closer to abdication. Where it goes wrong, Pisces has agreed to a life it never actually chose and only notices some years in.
Venus with Neptune and Jupiter
Taurus is ruled by Venus, which is concrete about pleasure and slow to change its attachments. Pisces answers to Neptune in modern practice and Jupiter in the older scheme, both of which work by expansion rather than by definition.
Venus alongside Neptune is the classic signature for idealising a partner, and here it is doubled by Taurus's reluctance to revise a settled view. The combination is capable of sustaining an inaccurate picture of the relationship for a long time. The strength of that depends on the actual placements rather than on the Suns.
Where it grinds
Vagueness against literalism. Pisces answers indirectly and changes its account without noticing; Taurus takes the first answer as the position and holds it. Taurus then feels misled about something Pisces never intended to state definitively.
The second problem is inertia. Neither sign forces a change, so an arrangement that has stopped working continues out of sheer comfort. Fixed earth will not move and mutable water will not insist, and years pass in a situation that both privately know is finished.
What the Suns cannot report
A sun-sign pairing describes an average across a very large group and makes no claim about two named people. Treat a favourable sextile between Suns as an opening remark rather than a conclusion.
Venus is the placement to examine first, given the rulership and the pairing's tendency to idealise. Mars matters because it decides whether anyone will raise a difficult subject. The Moons cover what each needs when comfort is not enough on its own.
Questions people ask about this
Is Pisces and Taurus a comfortable pairing?
Usually, and the shared appetite for sensory comfort is part of it. Comfort is also what allows a stalled arrangement to continue unexamined.
Who sets the terms here?
Taurus, generally. Fixed earth holds a position and mutable water accommodates it rather than negotiating.
What is the Venus and Neptune risk?
Idealising the partner and staying with that picture past the point of accuracy. Taurus's reluctance to revise a view compounds it.
What should I compare instead of the Suns?
Venus above all, then Mars for directness and the Moons for need. Those describe the two people rather than a population.