Silverfish

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Two crickets on a green leaf, one with a reddish-brown body and the other with a dark brown body, positioned facing opposite directions. The leaf’s veins are prominent against its vibrant green color.

What do Silverfish Look Like?

Silverfish are wingless, tapered, about 1/2-inch to 3/4-inch long, and – appropriately – silver in color. These insects have soft bodies that are covered with tiny scales and tapered at the end, and they also move in a similar manner to fish. There is a pair of long antennae on their head, along with three long filaments at their rear end.

Silverfish are most active at night and tend to hide during the day, as they are nocturnal and have an aversion to light. In South Florida, they are a year-round pest.

Signs of a silverfish infestation

Silverfish are most likely to be discovered in basements and attics inside of stored items. They can also be found under sinks and around bathtubs. Silverfish are attracted to food sources such as:

  • Wallpaper paste
  • Paper products
  • Crumbs
  • Dead insects
  • Starch
  • Glue


  • While silverfish are not considered dangerous, they are destructive. They can destroy stored items that they feed on and stain fabric and other soft items.

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