Silverfish

Scientific Name: Lepisma saccharinum

Order & Family: Order: Zygentoma; Family: Lepismatidae

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

Silverfish

Natural Habitat

Typically found in dark, damp environments such as basements, bathrooms, and attics. They prefer areas with high humidity (75% to 95%).

Diet & Feeding

Polyphagous feeders that consume polysaccharides, such as starches and dextrin found in adhesives. Their diet includes book bindings, carpet, clothing, glue, paper, photos, sugar, and cotton.

Behavior Patterns

Nocturnal and move very quickly in a fish-like motion. They hide during the day and can survive for long periods (weeks) without food.

Risks & Benefits

Generally harmless to humans (they do not bite or spread disease) but are considered pests because they damage household items like books, wallpaper, and clothing. They can trigger allergies in some people.

Identified on: 2/12/2026