Silverfish

Lepisma saccharina

Wingless insects that feed on paper, glue, and starchy materials in damp areas.

Insect Low Risk

About Silverfish

Silverfish are primitive, wingless insects named for their fish-like appearance and movements. Adults are 1/2 to 3/4 inch long with silvery-gray scales covering their body. They have two long antennae and three long tail-like appendages. Silverfish thrive in high humidity (75-95%) and prefer temperatures of 70-80°F. They're nocturnal and move quickly when disturbed. They can survive months without food and live 2-8 years. They feed on carbohydrates, especially sugars and starches - damaging books, wallpaper, photos, clothing, and dry goods. They're common in bathrooms, attics, and basements.

Identification

Silvery-gray, fish-like body. 1/2 to 3/4 inch long. Tapered from head to tail. Two long antennae. Three long tail appendages. Covered in scales. Fast, wiggling movement. No wings.

Signs of Infestation

Live or dead silverfish in sinks, bathtubs, or floors. Yellow stains on fabrics or papers. Irregular holes in wallpaper or books. Damaged photographs or documents. Black pepper-like feces. Presence in humid areas like bathrooms or basements.

Health & Safety Risks

Silverfish don't bite, sting, or transmit diseases. They're primarily a nuisance pest. Their feeding damages valuable items including books, photographs, wallpaper, and clothing. Can contaminate food items. Their presence indicates moisture problems.

Prevention Tips

Reduce humidity with dehumidifiers. Fix plumbing leaks. Seal cracks and crevices. Store books and papers in dry areas. Keep food in sealed containers. Remove old papers and cardboard. Improve ventilation in damp areas. Caulk baseboards and molding.