In all of the television/film that is canon, how many different species (excluding mongrel children
) have been shown (not necessarily named)?
I realize some random aliens look similar, leading to speculation they may be the same race.
Nevertheless, does anyone know enough to give a reasonable estimate to the number of known (named and unnamed) species native to this galaxy (or otherwise) according to canon??

I realize some random aliens look similar, leading to speculation they may be the same race.
Nevertheless, does anyone know enough to give a reasonable estimate to the number of known (named and unnamed) species native to this galaxy (or otherwise) according to canon??