Silverfish Identification

Silverfish are small, wingless insects commonly found in homes and businesses across London. Although they do not bite or spread diseases, they can damage books, clothing, wallpaper, stored food, and other household items. Learning how to identify silverfish and recognize the early signs of an infestation can help protect your property and prevent further damage.

Silverfish are known for their silvery-grey colour, fish-like shape, and quick movements. They are most active at night and prefer dark, damp areas where humidity levels are high.

How to Identify Silverfish

Silverfish have a distinctive appearance that makes them easy to recognize.

Characteristics of Silverfish

• Silvery-grey, shiny body
• Wingless, fish-like shape
• Long antennae
• Three tail-like bristles
• Approximately 10–15 mm long
• Fast-moving, especially at night

Where Do Silverfish Live?

Silverfish thrive in warm, damp environments where they can easily find food and moisture.

Common hiding places include:

• Bathrooms
• Kitchens
• Basements
• Lofts
• Cupboards
• Behind wallpaper
• Under sinks
• Storage boxes

Signs of a Silverfish Infestation

You may have a silverfish infestation if you notice:

• Silverfish crawling at night
• Small irregular holes in paper or fabrics
• Yellow stains on books or clothing
• Tiny black droppings that resemble black pepper
• Shed skins near hiding places

Silverfish feed on starchy materials such as paper, cardboard, wallpaper paste, glue, cereals, fabrics, and books. Over time, they can damage valuable belongings and become difficult to eliminate because they hide in hard-to-reach areas.

Reducing moisture, improving ventilation, and treating infestations early can help prevent long-term problems.

If you have noticed silverfish or signs of an infestation, our experienced technicians provide reliable Silverfish Control Services across London. We identify the source of the infestation, apply effective treatments, and help prevent silverfish from returning.

Damage to carpets, clothing, books, and other household items is not always caused by silverfish. Visit our Carpet Beetle Identification guide to learn how to identify carpet beetles and understand the differences between these common household pests.