Silverfish

Identification

Size: Silverfish typically range from 0.5 to 1 inch (12 to 25 millimeters) in length. Their bodies are long, flat, and taper toward the back.

Color: Most silverfish are light gray or silvery blue. Their bodies have a metallic appearance due to tiny scales that cover their surface.

Description: Silverfish are small, wingless insects that move quickly in a fish like motion. They prefer dark and humid environments and often hide in bathrooms, basements, kitchens, and storage areas. Silverfish feed on materials that contain starch, sugars, or cellulose. This makes items such as paper, books, cardboard, clothing, and pantry goods especially vulnerable.

Silverfish are nocturnal insects that thrive in areas with high humidity. They can survive for long periods without food but will actively seek out materials that provide starch or protein. Their feeding habits can cause noticeable damage to stored items, especially when infestations grow larger.

These insects are often found near moisture sources. Common locations include bathrooms, laundry rooms, basements, and kitchens. Silverfish are capable of squeezing into tiny cracks and hiding under flooring, inside wall voids, or behind stored objects. Their presence is usually discovered through the damage they leave behind rather than through direct sightings.

Although silverfish do not spread disease or bite humans, they are persistent pests that can damage belongings over time. Controlling humidity is an important part of long term prevention. Infestations may require targeted treatments to eliminate insects hiding in hard to reach areas.

Small, wingless insect with a teardrop shaped body
Silver or gray coloring with a metallic appearance
Three long bristles at the rear and two antennae at the head
Fast, darting movement that resembles a fish
Activity mostly at night or in dark areas
Presence in humid spaces such as bathrooms, kitchens, basements, or attics

Small feeding marks on books, paper, wallpaper, cardboard, and stored fabrics
Tiny pepper like droppings found near damaged items
Yellowish stains or scales left behind where silverfish have traveled
Sightings of live insects when moving objects or turning on lights in dark areas
Activity near moisture sources such as under sinks or around leaky pipes

Reduce humidity by using dehumidifiers and improving ventilation
Repair leaks around pipes, sinks, and appliances
Store papers, books, and fabrics in sealed containers
Keep dry goods in airtight containers to prevent feeding
Seal cracks and gaps where insects can hide or enter
Vacuum regularly to remove food particles and potential hiding spots
Use professional pest control services for persistent or widespread infestations