Silverfish
Lepisma saccharina · Insect, Invertebrate, Cold-blooded, Wild
Animal Family
Family Lepismatidae, order Zygentoma, class Insecta
Animal Category
Insect/Arthropod
Breed / Variety
Common Silverfish
Conservation Status
Least Concern, highly adaptable and common worldwide, often considered a household pest.
About This Creature
Small, wingless insect measuring about 13 to 25 millimeters long. It has a flattened, carrot-shaped body tapering at the rear, covered in tiny metallic silver-grey scales that give it a fish-like appearance and movement.
Physical Characteristics
Features two long antennae on the head, compound eyes, and three distinctive long bristle-like appendages at the posterior tip of the abdomen. It has six short legs specialized for rapid running rather than jumping.
Behavior & Temperament
Nocturnal and secretive, avoiding light. Highly agile and fast runners. Solitary insects that gather in moist, dark crevices. They do not bite humans or transmit diseases.
Habitat & Diet
Origin Region
Originally native to the tropics of Europe and Asia, now cosmopolitan and found worldwide in human habitations.
Habitat
Urban/Suburban indoor environments, damp areas such as bathrooms, basements, and kitchens. Terrestrial and fossorial/crevice-dwelling.
Diet & Nutrition
Omnivorous/detritivore, feeding on carbohydrates, starches, polysaccharides, sugar, glues in book bindings, wallpaper, photos, hair, dandruff, and dead skin.
Lifespan & Health
Lifespan ranges from 2 to 8 years, making them remarkably long-lived for insects. They reproduce by indirect sperm transfer in damp conditions, laying small batches of eggs in cracks.
Special Characteristics
Can survive for months without food if water is available. Belong to one of the most primitive orders of insects, existing for over 300 million years before wings evolved.
Ecological Information
Acts as a minor decomposer in natural settings by breaking down organic matter, but acts as a household pest when feeding on paper goods and stored starches.