...for lack of a better title.
This was done for
's Seventh Sanctum's Alien Contact contest.
The generator-made description is:
The slime-covered race. They have five manipulatory limbs. They are herbivores. Their greatest leaders were once ambassadors. They can change genders under certain conditions. Their major technical achievements are in space travel. They are very unforgiving. They once ruled a great empire, but were utterly defeated in a war. Their planet of origin is a world that has several, broken rings surrounding it and is and only a small part of the world is habitable to the species.
I showed them as an agrarian society occupying several planets because they're herbivores who need more space than their home world. I guess they're hanging onto a few of their former colonies and farming there too.