Silverfish

Scientific Name: Lepisma saccharina

Order & Family: Order: Zygentoma; Family: Lepismatidae

Size: 12 to 19 mm (0.5 to 0.75 inches)

Silverfish

Natural Habitat

Dark, damp, and humid areas such as bathrooms, basements, and attics; also common in bookshelves and storage boxes.

Diet & Feeding

Carbohydrates such as sugar and starches; they feed on paper, book bindings, glue, clothing, wallpaper paste, and dead insects.

Behavior Patterns

Nocturnal and moves with a distinct wiggling motion resembling a fish; they are fast runners and long-lived (2-8 years).

Risks & Benefits

Risks: Consider pests because they damage property like books, wallpaper, and textiles; generally harmless to humans (do not bite or spread disease) but can trigger allergies in some people. Benefits: Minor role as decomposers.

Identified on: 2/16/2026