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Silverfish

life science Maturity 5-7 Next article →

The silverfish is a tiny, wingless insect.

Lepisma saccharina
Lepisma saccharina

It has a long, grey body with a metallic sheen. This insect moves with a wiggling motion. This movement looks just like a fish swimming. Because of this shape and color, people call it a silverfish.

Silverfish head close-up
Silverfish head close-up

These insects are very agile runners. They like to hide in dark places to avoid light. They are found all over the world. You can find them in Africa, the Americas, Australia, Eurasia, and the Pacific.

Silverfish scales
Silverfish scales

Silverfish have a very interesting way of growing. They undergo a process called moulting. This means they shed their old skin to grow larger. Most insects stop moulting once they are adults. However, silverfish are special because they keep moulting even after they reach adulthood. They might moult between 17 and 66 times in their lives. Some can even moult 30 times in a single year.

Nutritional traces of silverfishs in a book
Nutritional traces of silverfishs in a book

Young silverfish start out white. They turn grey and shiny as they get older. If they lose an antenna, they can regrow it in four weeks.

Finding food is a big part of their life. They love to eat things with carbohydrates. This includes starches and sugars. They can even digest cellulose, which is a part of paper. Because of this, they often live in libraries or classrooms. They might eat book bindings, glue, and wallpaper paste. They also like to eat cotton, silk, and even hair. In times of famine, they may eat leather or synthetic fabrics. They are very tough and can live for a year without food if they have water.

Scientists have studied these insects for a long time. Carl Linnaeus gave them the scientific name Lepisma saccharinum in 1758. This name describes their diet of starchy foods. The common name has been used since at least 1855. In 1957, a group called the ICZN made a ruling about their name. They decided the name Lepisma should be treated as neuter. This changed how the name is spelled in science. Today, experts use these names to tell different species apart.

Even though they can damage books, silverfish are part of a natural world. They live in moist areas with high humidity. They like humidity between 75% and 95%. You might find them in a basement, a kitchen, or even a bathtub. In a home, they are often called pests because they eat property. However, they do not spread diseases to people. Other animals like spiders and house centipedes hunt them. This shows how silverfish fit into the food chain in our homes.

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🖼️ Images & Media (4)
File:Lepisma_saccharina.jpg
Lepisma_saccharina.jpg
File:Silverfish head close-up.jpg
Silverfish head close-up.jpg
File:Nutritional_traces_of_silverfishs_in_a_book.jpg
Nutritional_traces_of_silverfishs_in_a_book.jpg
File:Silverfish_scales.jpg
Silverfish_scales.jpg
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