Small and flat, silverfish have scales and are a silver/blue color. Their body is tapered and it has 6 legs and no wings. Without wings, they wriggle like fish.
Silverfish eat a broad variety of carbohydrates and proteins, such as dried beef, flour, moist wheat flour, starch, oats, paper, glue, dead insects, some synthetic fibers, sugar, beef extract, and linen. Silverfish can live a long time without food. They also can live in damp basements and eat the surface mold on cardboard boxes.
Since silverfish eat some human foods, they can leave their excrement and body scales in the food stuff. Most of their damage is to books, paper products, and some natural and synthetic fibers. They can leave yellow stains on linen.
Their marks that are left after they feed are irregular, and they leave irregular shaped holes. They can attack fabric.
Silverfish are commonly found in basements, attics, kitchens, bookcases, wallpaper paste, bathrooms and laundry rooms. They prefer moist and dark locations with humidity (75-97%) and moderate temperatures (60-80 degrees F). They tend to live close to food sources and prefer dark environments.
For more even more information : Silverfish Control