How Big Do Silverfish Get?

Silverfish are cosmopolitan species. They live in well-protected areas in natural environments and in buildings.

As a general rule, silverfish tend to reside in damp or moist areas. Their feeding habits also involve starch-rich materials such as paper, cardboard and dried goods.

Although silverfish are not venomous, they can cause damage to clothing and household items. A silverfish infestation can be difficult to get rid of.

These insects can be found in basements, bathrooms, attics and other moist places. The average adult is about 3 cm long, although smaller ones can be found.

Adult silverfish are nocturnal. They can live without food for weeks. Usually, they are introduced into buildings through the packaging of books or cardboard cartons.

Adult silverfish molt about 50 times during their lifetime. Their eggs are oval-shaped and about 0.8 mm long. Generally, females lay only a few groups of eggs during their lifespan.

Female silverfish are able to survive for about a year without food. However, they must have a high relative humidity to do so.

During warmer seasons, silverfish can breed more rapidly. Shake roofs are a good breeding ground for them.

Although silverfish are not venomous, their feces are similar to black pepper-like pellets. Depending on the size of the infestation, stains may be left behind on fabrics, wallpaper and clothing. If you find an infestation, you should remove all bedding and wash the area in hot water.

Unlike cockroaches, silverfish are not attracted to light. When they are in danger, they run for cover.