The answer to 'what do silverfish look like' is that silverfish are small, wingless insects that have a distinctive silver-gray or metallic color. They have elongated, flattened bodies and move quickly, often scurrying along walls or across floors. Silverfish have three long appendages at the rear of their bodies, as well as two long antennae on their heads.
Silverfish are typically between 1/2 to 1 inch long and have a teardrop-shaped body that tapers at the rear. They have a soft, scale-like exoskeleton that gives them a shiny, silvery appearance. Silverfish are nocturnal and prefer dark, damp environments like bathrooms, basements, and attics.