So far, so good I think. I don't have any problems with the main article other than the red link - just make it a placeholder page saying it will be the site of the CCG for now. That'd be good enough. I do have commentary though, but you can skip that paragraph of course.
I note that you could try renaming Surfacers to "Oberflächenbewohner" - that's what google tossed my way for 'surface dweller' in German. I think the literal translation to English would be 'over surface dweller'. Translation of languages is always tricky though. "Nacht Bewohner" for 'night dweller' - I particularly like that, since the German word for night is quite harsh. I particularly like the work done on their reproductive system, as it now gives Abwehran Males "Quads" - I always liked how the culture shown in Mass Effect changed when the Krogans showed up. The empathetic ability is also interesting, though in my own opinion, having the response be only one of those two for their reaction to Non-Abwehrans is a little restrictive from an OOC perspective.
For your unapproved Sub-Articles, I notice the linking is a bit off. You can change the name of the link to suit your purposes by using a little line like this | after the main link. An example of changing Nepleslian to Nepleslians in the wiki-code would be [[:species:nepleslian|nepleslians]]. The same can be done for Surfacer/Nightwalker Hybrids. You'll want to leave out the chart that's under "Folk Heroes" since it's incomplete. Once it's ready, put it in.
Other than these minor nit-pickings, that's pretty much it.