The answer to 'types of silverfish' is that there are several common species of silverfish found in homes. The most well-known is the common silverfish (Lepisma saccharina), which is a small, silver-gray insect with a slender, elongated body and three long tail-like appendages. Other types include the gray silverfish (Ctenolepisma longicaudata) and the four-lined silverfish (Ctenolepisma quadriseriata). These insects are nocturnal and prefer dark, damp environments like bathrooms, kitchens, and basements where they feed on starches, sugars, and other organic materials.
Silverfish are generally harmless to humans, but they can cause damage to paper products, fabrics, and other household items. They are often attracted to homes by moisture, so controlling humidity and eliminating damp conditions is key to preventing infestations.