Silverfish are wingless and are silver or brown in color because their bodies are covered with fine scales. They are generally soft bodied, up to 3/4 inch long, flattened from top to bottom, elongated and oval in shape, have three long tail projections and two long antennae.
Female silverfish lay eggs continuously after reaching the adult stage and may lay over 100 eggs during her life. Eggs are deposited singly or in small groups in cracks and crevices and hatch in 3 to weeks. Silverfish develop from egg to young to adult within 4 to 6 weeks and continue to molt throughout their life.
Silverfish are chewing insects and general feeders but prefer carbohydrates and protein, including flour, dried meat, rolled oats, paper and even glue (how about that for a diet?). They survive long periods, sometimes over a year, without food but are sensitive to moisture and require humidity to survive. They are fast running and mostly active at night.
Silverfish are a nuisance pest inside homes and buildings. They can contaminate food, damage paper goods and stain clothing. Many of their habits are similar to cockroaches and they appear to be more common as household pests in drier parts of California.