Silverfish are nocturnal, elongate, and flattened insects typically between .5-1 inch in length. Their abdomen tapers at the end, giving them a fish-like appearance. They are born whitish, but develop a grayish hue and metallic shine as they get older. They have three long bristles on the rear and two long antennae.
Silverfish are sensitive to moisture and require high humidity to survive. They prefer lower levels in homes but may be found in attics. They can contaminate food, damage paper goods and stain clothing.
Silverfish consume matter that contains carbohydrates, such as starches and sugars in adhesives. These include glue, book bindings, paper, photos, sugar, coffee, hair, carpet, and clothing. Other substances that may be eaten include cotton, silk, linen, synthetic fibers, and dead insects.