Young silverfish look like adult silverfish, only smaller and white. These insects live a long life, anywhere from 2 to 8 years. They can also survive a long time without food, sometimes up to a year.

Silverfish aren’t likely to hurt you, but they can damage your home and give you the creepy crawlies. ... They’re usually white, silver, brown, or some combination of these colors.

How to keep silverfish away from your house. Of course, the best way to keep silverfish away is to prevent them from getting into your home in the first place.