"American cockroach adults grow to an average length of around 4 centimeters (1.6 in) and about 7 millimeters (0.28 in) tall. They are reddish brown and have a yellowish margin on the body region behind the head. American cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer warm temperatures around 84 degrees Fahrenheit and do not tolerate cold temperatures. Due to their large size and slow development, large infestations of these insects are not common within houses."[1]

[1] Wikipedia