silverfish or firebrat

6180   Hello -Shawn here in Prince George B.C.and we are experiencing a mild winter so far this December 2017. We found this unusual critter walking in a shower that does not see regular use & can not seem to identify it. It was @ 8 – 10 mm long and seemed sensitive to light changes/movements. We are just wondering if it crawled in or if it may be an indicator of other issues (mold / mildew or other moisture caused issues)

This is a bristletail (Zygentoma: Lepismatidae), I cannot tell from this image whether it more likely is a silverfish or firebrat. Both basically are nuisance pests that usually cause no real harm. See https://tinyurl.com/ydaj8n2s for more detailed information and control recommendations. Ed Saugstad, retired entomologist; Sinks Grove, WV.