How are firebrats similar to silverfish?

Firebrats and silverfish are closely related, both belonging to the order Zygentoma. As primitive, wingless insects, they share several key similarities:1

• Habits and Life Cycle: Both species exhibit similar life cycles and behavioral patterns.2
• Dietary Preferences: Both are considered pests that feed on starches, which can lead to damage to books, fabrics, and other household materials.21
• Habitat: Both are commonly found in indoor environments worldwide.21
• Classification: They are both categorized as apterygotes, a group of primitive wingless insects.3

While they share these traits, they are distinct species; for instance, firebrats are typically found in warmer locations, such as near furnaces or fireplaces, whereas silverfish are known for their slender, flat bodies and silvery scales.21