Click on any combination to explore that match in more detail. The most compatible signs with Pisces are generally considered to be Taurus, Cancer, Scorpio and Capricorn. The least compatible signs with Pisces are generally considered to be Gemini and Sagittarius. Comparing sun signs can give a good general idea of compatibility.
However, this is just a quick and easy way to compare, and it's going to have lots of exceptions on this broad level. That's because people are more than just their sun sign.