Silverfish are insects that can be found all over the world in most areas that are moist and humid. Typically they will be seen in bathrooms, attics, basements, closets and etc.

Silverfish actually are commonly mistaken for firebrats. They have close resemblances but they are not the same. They’re common names come from the color of their scales and also their movement. The movement resembles that of a fish as well as how their abdomens taper at the end like fish. Silverfish are flattened and elongated. They have long antennae and three long and thin appendages that seem like antennae at the rear end of the abdomen. Silverfish completely lack wings and instead use a squirming, wiggling motion to move. They are born creamy white in color and as they molt, they will change from a dark brown to black to silver with a metallic shine color.

Life Cycle
Silverfish go through a simple metamorphosis which means they do not have a larval stage. Instead, they molt as they mature and can molt up to almost 50 times in their entire lifespan. Females can lay up to 50 eggs at one time. They will look for cracks and crevices to lay their eggs in. The eggs take anywhere between 2 weeks to 2 months to hatch.
Once they hatch, the nymphs will emerge. Nymphs are typically a creamy white color and look just like fully matured silverfish. They will start to change colors as they molt. Their color will change to a greyish color with a metallic shine. It takes anywhere between three months to a couple years for nymphs to fully mature to adult silverfish. Silverfish are actually one of the few rare species of insects that continue to molt after they mate. Typically, insects mate after they are fully matured, however, silverfish may continue to molt even after they have reproduced their offspring. Their entire lifespan may be several years depending on the conditions of their environment.

Habitat and Damage
Silverfish are the most active during the night and will usually hide during the day. They’re known to roam large distances to search for a food source and so you will often times see them roaming on walls of the bedroom or bathroom and in the kitchen or garages. However, they are not limited to these spaces. They are attracted to a moisture source and humid areas and can survive in different environments, so they can be found in attics and basements or closets and other storage areas. Once they find a food source however, they will remain near that area and will not roam very far from their food source. The reason why they are such a havoc in households is because they are not very picky eaters. They will eat almost any plant-based material, but they will also eat anything from paper, glue, to flour or grainy materials like cereal and will also feed on fabrics like cotton and silk. They don’t pose a heave threat to people, however, heavy infestations of silverfish can cause damage to almost any stored material. Silverfish will leave visible holes in paper and books, on the wallpaper and clothes. Their feces can also stain the material that they travel on and move around.  They can also create a separation from the wallpaper from the wall because they eat the glue in between.

Dekko Silverfish Paks (Silverfish Poison Bait) - 24 PacksDekko Silverfish Paks (Silverfish Poison Bait)

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Date: Wednesday, 16. February 2011 17:53
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  1. 1

    How can I find a silverfish control product that is not hazardous to pets? I have two cats and they get into everything. I now have found smallish sized silverfish coming out from behind baseboards and I don’t want to use any product which may hurt my cats (and myself–I am presently battling cancer).

    Thank you !!

  2. 2

    Hello there (:
    We have a product called Cy-Kick Aerosol that you can use. Its safe for small children and pets once it has fully dried. It is recommended to be applied along the baseboard areas, cracks, crevices, and ares where you mostly see them. However if there may be other personal health issues that may be of a concern I highly recommend that you take a print out of the Cy-Kick Material Safety Data Sheet (MSDS) to your physician before use of the product. Best of luck to you, I hope it helped it getting rid of your silverfish problem! (:

  3. 3

    So I recently got some rooomates and they said that they had silver fish where they had lived and I wanted to know should I be worried that the silver fish came too??

  4. 4

    If they have a lot of clutter and mess, silverfish could have been carried. Although they may cause damage if they infest in large numbers, they will not be of much significance if there are a few stragglers. Moreover, they do not harm people or animals in any way. You can place the Dekko Silverfish Packs in concentrated areas of infestation. They’re very easy to use because you do not have to do anything additional to the packs. Simply, place the paper packs in concentrated areas of infestation and the silverfish actually eat through the packs and into the poison! Nothing large to worry about but don’t let the infestation get too large because they can start to damage paper goods and fabrics!

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