No interactions present.
Vagrant Darter is the only other possibility (some of these don't have obvious moustaches).
A side view showing whether or not the vulvar scale was particularly prominent would confirm it.
I did take one other shot, but it isn't very different. I have now posted it alongside the first one, just in case it helps (but I fear it won't help at all).
Unfortunately I only had my pocket Sony (max zoom 4x) with me at the time, so wasn't able to move around it much as I had to get so near anyway.
Lat/Lng: 42.53477, 2.85588
Stony track by river