User blog comment:JediSpectre117/Regarding the surviving Prothean./@comment-1440333-20120219001344/@comment-1679409-20120219005624

I've heard that theory somewhere else before. However, a few things seem to indicate otherwise. First, there is only one race shown in the picture in the codex entry for the Protheans. If "Prothean" really meant a collective of species and not just one, you would think there would be more than one species shown. Second, in Mass Effect 2, they talk about collector DNA is similar to Prothean DNA. That would seem to indicate that there is only one Prothean species. Finally, the images of Protheans in the beacons look very similar.