What kind of spider is this little one?

[Rhysingstar]

I found a stray spider in my vivarium a few minutes ago. No idea how it got there. Very camera shy and turns away from the camera as soon I get somewhat close.

Very small, around 5/6 mm in length.

 

[NYAN]

It’s a wolf spider, maybe a Pardosa species.

 

[Rhysingstar]

Thanks. That wasn't my first guess as it looks and acts so much different than the other two wolf spiders in my vivarium. The other two are much lighter in color (with dark bands) and hide in little holes while the lights are on. They also have little sort of webs around their holes. The other two only seem to come out once the lights go out.

This dark one sits on top of the drift wood all day long making no attempt to hide at all. Even when I shove the camera in, all it does is turn its butt towards the camera, but doesn't run. It is incredibly fast for such a tiny little spider. I have no idea how this little straggler found its way in, but glad it did. Very fun to watch. I'll have to go out and get some more fruit flies as this little one is way to small to tackle much more than that.