The number of fictional sentient species in Andromeda varies by the work of fiction that imagines them.
Astronomer's have not been able to count all the planets in the Andromeda Galaxy. The Andromeda Galaxy is home to one-trillion stars. The Andromeda Galaxy is expected to collide with the Milky Way in the next 4.5-billion years.
The Andromeda Galaxy is at a distance of about 2.5 million light-years from Earth; or from the Milky Way.
It is not known. The Andromeda Galaxy contains about a trillion stars, many of which certainly have planets, though we don't know how many. Many of the planets likely have moons. All told, there are likely several hundred billion to several trillion moons in the Andromeda Galaxy.
There are no smaller galaxies in the Andromeda galaxy. In the Local group of galaxies to which Andromeda and the Milky Way are part of, there are around 30 smaller galaxies,
At this time we do not know.
There are at least 150,000 sentient species in a fictionalized version of the Andromeda galaxy (a spiral galaxy 2.5 million light-years from Earth, and is 150,000 light-years in diameter, and contains 150 billion stars (each star is orbited by an average of 9 planets and 170 moons; as well as asteroids and nebulae)).
126,000.
315,000.
1,260,000.
1,260,000.
26,460.
56,700.
12,600.
1,008,000.
201,600.
It varies.
1,890.