German cockroaches are smaller than American cockroaches, and while the former has a light-brown color, the latter has a reddish-brown color. Let’s explore these differences in more detail below.

The average adult American cockroach ranges in length from 35 to 40 mm, although some can reach more than 50 mm—or two inches. ... German cockroaches are found throughout the world.

German cockroaches spend most of their lives hiding and only come out to feed and mate. They take about 2 months to grow from egg to adult. Their complete lifecycle usually takes about 100 days.

In the U.S., the most common are the German cockroach and the American cockroach, but Smokybrown, Brownbanded and Asian cockroaches are also a possibility. German cockroaches are small, with ...

The German cockroach evolved to live only in human environments. This means it's very good at adapting to pest control methods — even if it means changing its mating rituals.

Though there are over 4,000 species of cockroaches, Louisiana's roach roster includes the American, German, Oriental, Brown-banded and Pennsylvania Wood cockroach.