Where does Pisces belong in the Milky Way?

There is something wrong with your question. In fact, there is no actual relationship between the stars in the same constellation, but their projection positions on the celestial sphere are similar. It is not that the Milky Way belongs to any part of the Milky Way. The way we observe the Milky Way in the Milky Way is the Milky Way in the sky. This is it.

However, the Milky Way we can see in summer and winter is really different. In fact, it's just that we observe in different directions. In summer, we can see the center of the galaxy inward. In winter, we can only see the edge of the galaxy outward, just because the sun is close to the center of the galaxy in the sky.

The stars in constellation 88 are all from the Milky Way, and they are all very close to us. We can't see any stars outside the milky way with the naked eye. It's too far and too dark.

According to my own understanding, the constellation is a projection direction, Pisces, the zodiac, and Neptune, the ruler, located in the interval from 330 degrees to 0 degrees of the ecliptic.