Science fiction movies about alien creature

Question

I remember watching this movie in the 90s, so maybe it was made in 80s. There was a creature or alien that travel inside the spaceship. And it kills men in the ship by sucking them through the drainage on the floor

Answer 1

This does not feature an alien on a spaceship, but the most evocative scene of a man getting sucked down a sump drain and killed is from the generally not very good Amityville: It’s About Time.