Aspergillus niger is the most abundant species of Aspergillus in nature as it can grow on a large variety of substances. Aspergillus niger can even grow in environments with very little nutrients available. In houses it is often found growing on damp walls.
Of the Aspergillus species, Aspergillus niger infects humans the third most often. A fungal ball in the lungs is eventually created by Aspergillus niger after it infects a person's lungs and begins to grow. The health effects of Aspergillus niger include hearing problems and even hearing loss.
Aspergillus niger is black on the surface and white or yellow underneath.