Here's a breakdown:
* From Ganymede's perspective: The brightest star visible would be the Sun. Other stars would appear very similar to how they appear from Earth.
* From Earth's perspective: We can identify some of the stars that are "near" Ganymede (or Jupiter) at any given time by looking at star charts and considering the position of Jupiter in the sky.
* No stars are physically "near" Ganymede: The closest stars to our solar system are still light-years away, making them incredibly distant even from the perspective of Jupiter and its moons.
If you are interested in the stars visible near Jupiter at any given time, you can use an online star chart or planetarium software like Stellarium to find out. Just enter your location and date to get an accurate view of the night sky.