Earwig vs. Silverfish: What’s the Difference?

Earwigs and silverfish are two small insects that people often mistake for each other because they have long bodies, move quickly, and are commonly found in damp or dark places. However, earwigs and silverfish are different insects with distinct body shapes, behaviors, and habits.

The easiest way to tell them apart is by looking at their tails. Earwigs have a pair of noticeable pincers at the end of their abdomen, while silverfish have three long, threadlike appendages extending from their rear. Silverfish also have a silvery, fish-shaped body, whereas earwigs usually have a darker, more elongated body with short wings or wing covers.

Knowing the difference between an earwig and a silverfish can help you identify the insect in your home, understand whether it can cause damage, and choose the right way to manage it.

Quick Answer

Earwigs are elongated insects with forceps-like pincers at the end of their abdomen. They are usually brown or dark reddish-brown and are commonly found in gardens, under stones, and in damp outdoor areas.

Silverfish are small, wingless insects with silvery scales, a tapered body, long antennae, and three tail-like appendages. They often live indoors in damp, dark spaces and feed on materials containing starch, sugars, and certain fibers.

The main difference is that earwigs have pincers, while silverfish have three slender tail filaments. Neither insect bites people as part of its normal behavior, but both can become unwanted household pests.

Earwig vs. Silverfish: Key Differences at a Glance

The following table highlights the main differences between earwigs and silverfish.

Feature	Earwig	Silverfish
Scientific group	Order Dermaptera	Order Zygentoma
Body shape	Long, narrow, and somewhat flattened	Elongated, flattened, and tapered
Typical color	Brown, reddish-brown, or dark brown	Silvery gray or gray-brown
Tail	Two prominent pincers	Three slender tail filaments
Wings	Many species have wings or wing covers	Wingless
Antennae	Long and threadlike	Long and threadlike
Movement	Crawls quickly and may hide in tight spaces	Moves quickly with a fish-like, wiggling motion
Common habitat	Gardens, mulch, leaf litter, and damp crevices	Bathrooms, basements, closets, and other indoor spaces
Main food sources	Plant matter, small insects, and decaying organic material	Starches, sugars, paper, glue, and some natural fibers
Common household concern	Occasional plant damage and indoor nuisance	Damage to paper, books, stored items, and fabrics
Typical hiding places	Under pots, stones, bark, and debris	Cracks, wall gaps, bookshelves, and dark storage areas

Although both insects prefer protected spaces, their physical features and feeding habits make them relatively easy to distinguish once you know what to look for.

What Is an Earwig?

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An earwig is a small, elongated insect belonging to the order Dermaptera. It is best known for the pair of curved or straight pincers at the end of its abdomen.

Earwigs are commonly found outdoors in moist, sheltered places. They may hide beneath flowerpots, rocks, bark, mulch, and piles of leaves. Some species occasionally enter homes, especially when outdoor conditions are unfavorable or when they find a convenient hiding place.

Most earwigs are dark brown, reddish-brown, or nearly black. Their bodies are relatively flat, allowing them to squeeze into narrow spaces.

Physical Characteristics of Earwigs

Earwigs have several distinctive features that help identify them.

• Pincers: A pair of forceps-like appendages at the rear of the abdomen.
• Body: A long, narrow, and somewhat flattened body.
• Color: Usually brown, reddish-brown, or dark brown.
• Antennae: Long, segmented antennae extending from the head.
• Wings: Many adult species have short forewings that cover folded hindwings, although some species are wingless or have reduced wings.
• Legs: Six legs located near the front portion of the body.

The pincers are the most recognizable feature. They are used for defense, handling prey, and other behaviors. Their shape can vary between species and between males and females.

Where Do Earwigs Live?

Earwigs usually prefer moist, dark, sheltered environments.

Common outdoor hiding places include:

• Under rocks and stones
• Beneath flowerpots and garden containers
• Inside mulch and leaf litter
• Under tree bark
• In compost piles
• Around damp garden debris
• In cracks near foundations

Earwigs can also enter homes through gaps around doors, windows, and foundations. They may be found in bathrooms, basements, kitchens, and laundry rooms, especially when moisture is present.

However, finding an earwig indoors does not automatically mean there is an infestation. Some individuals wander inside by accident.

What Do Earwigs Eat?

Earwigs are generally omnivorous. Their diets may include decaying plant material, living plant tissue, small insects, and other organic matter.

Some earwigs feed on aphids, insect eggs, and other small invertebrates, which can make them useful in gardens. Others may damage flowers, seedlings, fruits, and vegetables when populations are high or food is limited.

Their feeding habits depend on the species, environment, and available food.

What Is a Silverfish?

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A silverfish is a small, wingless insect belonging to the order Zygentoma. It is named for its silvery appearance and the fish-like movement it makes when crawling.

Silverfish are usually found in dark, sheltered places, particularly indoors. They prefer environments with access to food and, in many cases, moderate to high humidity.

Their bodies are covered with tiny scales that give them a metallic or silvery-gray appearance. They have long antennae at the front and three slender filaments at the rear.

Silverfish are common household pests because they can feed on materials containing starch, sugars, and certain fibers. They may damage books, paper, cardboard, wallpaper, and stored fabrics.

Physical Characteristics of Silverfish

Silverfish have several features that distinguish them from earwigs.

• Body: An elongated, flattened body that tapers toward the rear.
• Color: Silvery gray, gray-brown, or sometimes brownish.
• Tail: Three long, threadlike appendages at the rear.
• Antennae: Long, thin antennae at the front of the head.
• Wings: No wings at any life stage.
• Movement: A quick, wriggling or fish-like motion.

Adult silverfish are commonly around half an inch to three-quarters of an inch long, although size varies by species.

Their tapered body and three tail filaments are especially useful for identification.

Where Do Silverfish Live?

Silverfish often live in dark, quiet spaces where they can find food and shelter.

Common indoor hiding places include:

• Bathrooms and laundry rooms
• Basements and crawl spaces
• Closets and storage rooms
• Behind baseboards and wall trim
• Under sinks and near plumbing
• Inside cardboard boxes
• Around bookshelves and paper storage
• In cracks and gaps around walls

Silverfish may also live outdoors beneath stones, bark, and other sheltered materials. However, they are particularly well known for their presence in homes and buildings.

They are often associated with moisture, but not every silverfish species requires extremely damp conditions. Some related species can survive in relatively dry indoor environments.

What Do Silverfish Eat?

Silverfish feed on a variety of materials containing carbohydrates and other organic substances.

Their food sources may include:

• Paper and cardboard
• Book bindings and paper coatings
• Wallpaper paste and certain adhesives
• Starchy food residues
• Sugar and other carbohydrate-rich materials
• Cotton, linen, and other natural fibers when food residues or suitable materials are available
• Dead insects and other organic debris

Silverfish may also feed on materials containing cellulose or other plant-based substances.

They can damage valuable books, photographs, documents, and stored items over time, particularly when food and shelter are readily available.

How to Tell an Earwig From a Silverfish

The easiest way to distinguish an earwig from a silverfish is to examine its rear end, body color, and movement.

Look at the Tail

The tail is the most reliable visible feature for telling these insects apart.

Earwigs have two pincers. These appendages resemble small forceps and may curve inward or outward. They are often clearly visible when the insect is viewed from above or behind.

Silverfish have three slender tail filaments. These appendages look like thin threads extending from the back of the body. They are not shaped like pincers.

If the insect has a pair of noticeable forceps-like structures, it is likely an earwig. If it has three delicate tail filaments, it is likely a silverfish.

Compare Their Body Shapes

Earwigs have a more uniformly elongated body, with a noticeable abdomen that ends in pincers.

Silverfish have a body that gradually narrows toward the rear, giving them a tapered, teardrop-like shape.

Silverfish also tend to look smoother and more fish-like because of their silvery scales.

Check the Color

Color can help with identification, but it should not be the only feature you use.

Earwigs are typically brown, reddish-brown, or dark brown. Silverfish are often silvery gray or gray-brown.

Some silverfish may appear darker than expected, and lighting can make their color difficult to judge. Look for the tail structure and body shape as well.

Observe How They Move

Both insects can move quickly, but their movements may look different.

Earwigs usually crawl with a more conventional insect-like motion. They may quickly disappear into narrow cracks or under nearby objects.

Silverfish often move with a distinctive side-to-side or wiggling motion that resembles a swimming fish.

Movement can support an identification, but it is less reliable than examining the insect’s body and tail.

Earwig vs. Silverfish: Habitat and Behavior

Earwigs and silverfish both seek shelter, but they tend to occupy different types of environments.

Habitat or Behavior	Earwig	Silverfish
Outdoor gardens	Very common	Some species occur outdoors
Damp soil and mulch	Common	Possible, depending on species
Bathrooms	May appear occasionally	Common hiding area
Basements	May enter	Common hiding area
Paper and books	Not a typical food source	Potential food source
Plants and flowers	May feed on plant material	Not a typical food source
Nocturnal activity	Often active at night	Often active at night
Indoor breeding	Possible in suitable conditions	Possible in suitable conditions

Both insects tend to avoid bright light and seek protected areas. However, their presence in a home may indicate different environmental conditions or food sources.

An earwig found indoors may have wandered in from the garden. Silverfish found repeatedly near books, cardboard, or damp storage areas may be using the home as a regular habitat.

Do Earwigs Bite or Pinch?

Earwigs are not known for biting people as part of their normal behavior, but they can use their pincers defensively.

If an earwig is handled or trapped against the skin, it may attempt to pinch. The sensation is usually mild, and the pincers are not considered a significant danger to humans.

Despite their intimidating appearance, earwigs do not crawl into people’s ears to lay eggs or burrow into the brain. This is a long-standing myth associated with their name.

Most earwigs prefer to remain hidden in damp, sheltered environments rather than interact with people.

Do Silverfish Bite?

Silverfish do not normally bite people or pets. They are not blood-feeding insects and do not seek humans as a food source.

Their mouthparts are adapted for feeding on starchy materials, organic debris, and other suitable food sources.

Although silverfish can be a nuisance and may damage household belongings, they are not generally considered dangerous to people.

The main concern with silverfish is the damage they can cause to paper products, stored items, and certain fabrics rather than direct physical harm.

Which Insect Causes More Damage?

The type of damage depends on the insect and where it is living.

Silverfish are more closely associated with damage to household belongings, while earwigs are more commonly associated with occasional damage to garden plants.

Damage Caused by Earwigs

Earwigs may feed on plant material, including:

• Flower petals
• Young leaves
• Seedlings
• Soft fruits
• Vegetables

They may leave irregular holes, chewed edges, or damaged petals.

However, earwigs also feed on other small insects and decaying organic matter. Their presence in a garden does not automatically mean they are harming plants.

Damage Caused by Silverfish

Silverfish may damage items that contain starches, sugars, or suitable organic materials.

Common signs of silverfish damage include:

• Irregular holes in paper
• Scraped or damaged book pages
• Surface damage to wallpaper
• Damage to paper labels and cardboard
• Feeding marks on stored fabrics
• Yellowish stains or small dark specks near infested items

Silverfish damage may develop gradually, so it can be difficult to notice until the affected material is inspected closely.

How to Get Rid of Earwigs

The best way to manage earwigs is to reduce their hiding places, limit excess moisture, and prevent them from entering the home.

Reduce Outdoor Hiding Places

Earwigs often hide in damp garden debris and sheltered spaces.

To make your property less attractive to them:

• Remove piles of wet leaves and decaying plant matter near the house.
• Keep mulch from accumulating directly against the foundation.
• Move flowerpots and other objects that trap moisture away from exterior walls.
• Remove unnecessary debris from garden beds.
• Avoid overwatering areas close to the building.

These steps reduce the number of sheltered places where earwigs can gather.

Seal Entry Points

Check the outside of your home for small gaps and openings.

Pay particular attention to:

• Gaps beneath exterior doors
• Damaged window screens
• Cracks around foundations
• Openings around pipes and cables
• Gaps around utility entrances

Use suitable weatherstripping, door sweeps, screens, and sealants to reduce entry.

Reduce Indoor Moisture

Although earwigs are more commonly associated with outdoor habitats, damp indoor spaces can provide shelter.

Fix leaking pipes, dry wet areas, and improve ventilation where needed.

If earwigs repeatedly appear indoors, inspect nearby doors, windows, and foundation gaps for possible entry routes.

Use Traps When Needed

Simple traps may help reduce the number of earwigs in gardens or other areas.

Rolled-up damp newspaper or similar sheltered materials can attract earwigs seeking a hiding place. These traps can be checked and removed regularly.

Traps may help with localized problems, but they do not replace moisture control and habitat management.

How to Get Rid of Silverfish

Silverfish control focuses on reducing moisture, removing food sources, and eliminating the cracks and hiding places where they live.

Reduce Humidity

Moisture control is especially useful when silverfish are found in bathrooms, basements, or other damp areas.

Helpful steps include:

• Repair leaking pipes and faucets.
• Use bathroom exhaust fans when needed.
• Improve ventilation in damp rooms.
• Use a dehumidifier in persistently humid spaces.
• Dry wet surfaces and remove standing water.

Reducing humidity can make some indoor environments less suitable for silverfish, although it may not eliminate every species or infestation.

Remove Food Sources

Silverfish can survive on small amounts of suitable food.

To limit their food supply:

• Store paper products in clean, dry areas.
• Keep cardboard boxes off damp floors.
• Clean up crumbs and food residues.
• Store dry foods in tightly sealed containers.
• Remove unnecessary stacks of paper and old packaging.
• Keep books and documents away from damp walls.

These steps make it harder for silverfish to find food and shelter.

Seal Cracks and Gaps

Silverfish often hide in narrow spaces during the day.

Inspect areas around baseboards, wall trim, cabinets, and plumbing openings.

Seal suitable gaps and repair damaged trim where practical. Reducing hiding places can make monitoring and control easier.

Use Traps and Targeted Treatments

Sticky insect traps may help identify where silverfish are active and reduce small numbers.

Place traps near suspected hiding areas, such as behind furniture, along baseboards, or near storage spaces.

If the problem continues, consider a targeted pest-control treatment appropriate for the location and follow the product label carefully. Professional pest management may be helpful when the infestation is widespread or persistent.

Earwig vs. Silverfish: Life Cycle and Reproduction

Earwigs and silverfish both develop from eggs, but their life cycles differ in several ways.

Earwig Life Cycle

Earwigs undergo incomplete metamorphosis.

Their life cycle generally includes:

• Egg: Females lay eggs in protected locations, often in soil or other sheltered areas.
• Nymph: Young earwigs hatch and gradually develop through several growth stages.
• Adult: The insect reaches maturity and develops adult characteristics, including fully developed pincers.

Earwig nymphs resemble smaller versions of adults, although their bodies and pincers are less developed.

Some earwig species show maternal care, with females guarding their eggs and young.

Silverfish Life Cycle

Silverfish also undergo incomplete metamorphosis.

Their life cycle includes:

• Egg: Females lay eggs in protected cracks and other suitable locations.
• Young silverfish: Newly hatched individuals resemble small adults.
• Growth stages: Silverfish molt repeatedly as they grow.
• Adult: Mature individuals continue to molt throughout their lives.

Silverfish can take a long time to mature under unfavorable conditions, and their development depends on factors such as temperature, food, and humidity.

Their ability to continue molting as adults helps distinguish their development from that of many other insects.

Can Earwigs and Silverfish Live in the Same House?

Yes, earwigs and silverfish can live in the same house.

They may occupy different areas depending on their food sources, moisture needs, and preferred hiding places.

For example, earwigs may be found near damp entry points, basements, or garden-facing doors, while silverfish may hide behind baseboards, in storage rooms, or around books and paper products.

Finding both insects does not necessarily mean they are attracted to each other or that one species is causing the other to appear.

Their presence may simply reflect the availability of suitable shelter, moisture, and food.

Common Mistakes When Identifying Earwigs and Silverfish

Several identification mistakes can make it harder to determine which insect you are seeing.

Mistaking Silverfish Tail Filaments for Pincers

Silverfish have three thin tail filaments, which may look like small spikes from a distance.

Earwigs have two thicker, forceps-like pincers that are usually much more noticeable.

Looking closely at the rear of the insect is the simplest way to distinguish them.

Assuming Every Brown Insect Is an Earwig

Not all earwigs are the same color, and some silverfish may appear gray-brown or dark brown.

Color alone is not enough for reliable identification.

Check the body shape, tail structure, and presence or absence of wings.

Assuming Every Insect in a Bathroom Is a Silverfish

Silverfish commonly appear in bathrooms, but other insects can also enter damp areas.

An insect with prominent pincers is more consistent with an earwig, even if it is found near a sink or bathtub.

Believing Earwigs Are Dangerous to Humans

Earwigs may pinch if handled, but they are not known for attacking people.

Their appearance can be unsettling, but they are generally considered a nuisance rather than a serious household threat.

Assuming Silverfish Only Live in Wet Rooms

Silverfish are associated with moisture, but some species can live in relatively dry indoor environments.

They may also be found in bookshelves, closets, and storage areas where suitable food and shelter are available.

FAQs

Conclusion

Earwigs and silverfish may look similar at first, but they have clear differences. Earwigs have pincers at the end of their abdomen, while silverfish have three slender tail filaments and a tapered, silvery body.

Earwigs are commonly associated with gardens and damp outdoor spaces, while silverfish are often found indoors near moisture, paper, and other suitable food sources.

If you find either insect in your home, identify it by examining its body and tail. Then focus on reducing excess moisture, removing suitable hiding places, and sealing entry points. These practical steps can help you manage unwanted insects and protect your home and belongings.