Silverfish (likely firebrat)

Warm, humid indoor areas such as bathrooms, kitchens, basements, wall voids, and storage spaces; also occurs in buildings worldwide.

Feeds on starches, sugars, paper, book bindings, cardboard, glue, textiles, and other carbohydrate-rich materials; it scavenges rather than bites people.

Nocturnal, fast-running, and secretive; it hides in cracks by day. Nymphs resemble adults, and development occurs gradually without a pupal stage.

Harmless to humans and not known to transmit disease, but infestations can damage paper, wallpaper, books, and stored materials. It contributes modestly to indoor scavenging and decomposition.