Gray Silverfish

Ctenolepisma longicaudatum

About Gray Silverfish

An invasive silverfish species spreading rapidly through northern Europe. It is larger and more uniformly gray than the common silverfish.

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Did You Know?

It has become a major household pest in Scandinavia since the 2000s.

How to Identify Gray Silverfish

Gray Silverfish (Ctenolepisma longicaudatum) belongs to the order Zygentoma, family Lepismatidae. Adults typically measure 10-15 mm.

Gray Silverfish Habitat

Gray Silverfish is found in underground habitats, particularly across Europe. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

Gray Silverfish Diet and Feeding

Gray Silverfish has an omnivorous diet, feeding on both plant and animal matter. This dietary flexibility allows it to exploit a wide range of food sources in its environment.

Where Is Gray Silverfish Found?

Gray Silverfish can be found in Europe, where it inhabits underground environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Gray Silverfish can be found

Is Gray Silverfish Dangerous?

Gray Silverfish is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.

Gray Silverfish Role in Nature

Gray Silverfish plays a role in its ecosystem as part of the food web, serving as both consumer and prey. Insects like Gray Silverfish are a vital food source for birds, bats, and other wildlife, and contribute to the overall health and balance of their environment.

Seasonal Activity

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Peak activity Moderate Low / dormant

Frequently Asked Questions About Gray Silverfish

What does Gray Silverfish look like?

The Gray Silverfish typically measures 10-15 mm.

Where is Gray Silverfish found?

The Gray Silverfish is found in Europe and typically inhabits underground environments.

What does Gray Silverfish eat?

The Gray Silverfish has an omnivorous diet, feeding on both plant and animal matter.

Is Gray Silverfish dangerous to humans?

The Gray Silverfish is generally harmless to humans. It does not bite or sting and poses no significant health risk.

What is an interesting fact about Gray Silverfish?

It has become a major household pest in Scandinavia since the 2000s.

Cite This Page

APA:
InsectDiscover. (2026). Gray Silverfish (Ctenolepisma longicaudatum). Retrieved from https://insectdiscover.com/insect/gray-silverfish

MLA:
"Gray Silverfish." InsectDiscover, https://insectdiscover.com/insect/gray-silverfish.