"The German cockroach is a small species of cockroach measuring about 1.3 cm (0.51 in) to 1.6 cm (.63 in) long; however, they are known to get bigger. This cockroach is also smaller than many other species so it can more easily hide and fit into very small cracks and crevices to evade humans. It can be tan through brown to almost black, and has two dark parallel streaks running from the head to the base of the wings. Although it has wings, it is unable to sustain flight. The German cockroach is one of the most common and prominent household cockroaches in the world, and can be found throughout many human settlements."