Comparison of Three Common Roaches
| Roach | German cockroach | Oriental cockroach | American cockroach |
| Size | 12 mm (1.2 cm) to 15 mm (1.5 cm) | 25 mm (2.5 cm) to 30 mm (3.0 cm) | 28 mm (2.8 cm) to 43 mm (4.3 cm) |
| Habitat | Heated buildings, optimum 32 °C (90 °F) | 20 °C (68 °F) to 29 °C (84 °F) | Same as German |
| Nymphal development time | 6 to 12 weeks | 6 to 12 months | 4 to 15 months |
| Life Span | 6 to 9 months | 1 to 1.5 years | 1 to 1.5 years |
| Able to fly? | No | No | Yes |
Read more about this topic: Oriental Cockroach
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