German Cockroach Nymph

Scientific Name: Blattella germanica

Order & Family: Blattodea: Ectobiidae

Size: 3 mm to 10 mm as nymphs; adults grow to 13-16 mm.

German Cockroach Nymph

Natural Habitat

Indoor environments, specifically warm and humid areas like kitchens and bathrooms nearby food and water sources.

Diet & Feeding

Omnivorous scavenger that eats almost anything, including food scraps, grease, starches, glue, and even toothpaste.

Behavior Patterns

Nocturnal and highly gregarious. They undergo incomplete metamorphosis and can reproduce extremely quickly, with one female producing hundreds of offspring in her lifetime.

Risks & Benefits

Major household pest. They can carry pathogens such as Salmonella and E. coli, and their shed skins and droppings are common triggers for asthma and allergies in humans.

Identified on: 5/19/2026