Silverfish

Dark, damp environments such as bathrooms, basements, and kitchens, favoring high humidity.

Carbohydrates and proteins, including paper, book bindings, wallpaper paste, glue, and starches.

Nocturnal, wingless, and fast-running insects that avoid light and reproduce slowly in humid conditions.

Harmless to humans and pets, but can damage books, paper goods, and textiles in household infestations.