EotE CRB page 43 RAW:
"Step 3: Selecting Species
In Edge of the Empire, players have a wide variety of options to choose from when choosing species to play. The billions of worlds in the Star Wars galaxy
confer nearly unlimited possibilities. The diverse crowd in the Mos Eisley Cantina scene in Star Wars: Episode IV A New Hope offers but a glimpse at the sapient creatures
who inhabit this far away universe.
This section provides detailed rules for eight major species types, though this should not dissuade players from choosing species not listed here.
Star Wars is not Star Wars without its aliens. Players should be able to encounter new life forms in their adventures and also have the opportunity to roleplay them.
The very nature of the fringe is to break bounderies and find new possibilities - The only limitation is imagination."
RAI: Players should be able to come up with and play their own Species?
What do you think? Do you or your gm let players pitch their very own species idea and would you or your gm allow them to make them with or without your help?