from wikipedia
Asari
Main article: Asari (Mass Effect)
The asari are a bipedal species that have a seat on the Citadel Council. Their bodies can adapt greatly, allowing them to mate with any other species, with whom the offspring is always female. Their homeworlds name is Thessia. Of all the species in Council space, the asari are the most widespread, powerful, and respected. This is due in part, to their being the first species, after the Protheans, to achieve interstellar flight, to discover and learn how to use the Citadel, and their position as a founding member species of the Citadel Council. Despite this, the asari are open in their service to others, to the point where there is no cultural stigma attached to performance arts, even sexual ones. Of all the galactic species, they are the most economically powerful, their culture, products and entertainment dominating the galaxy. They are governed by a loose democracy, known as the Asari Republic, and are known to be politically neutral, favoring stability that is conductive to cultural and economic development. The Asari live for a thousand years going through three stages in life. They can reproduce with any species or gender .