http://en.wikipedia.org/wiki/Silverfish
thin, a curved body like a skinny tear drop. (or a fish)
3 cerci at the end of its body.
its a flat bug with a hard greyish lusterous shell
2 long antenaes on its head and 3 limbs for crawling
they can be found in basements, bathrooms, garages, closets and attics
they usually inhabit moist areas