There is a common misconception that toxic mold is only one specific strain. However, scientists have identified hundreds of mold species which produce chemicals and toxins that are harmful to the human body. Toxic molds fall into these five major categories: Stachybotrys, Penicillium, Fusarium, Cladosporium, and Aspergillus.

Toxic Molds by Category


Stachybotrys is the most dangerous toxic mold. It is commonly referred to as “black mold.” Although Stachybotrys have become infamous for their black coloring, not all black mold is part of the txic genus. Mold species under this genus produce mycotoxins wherever they are disturbed. Mycotoxins cause flu-like symptoms and can also lead to serious illnesses and hemorrhaging. Young children, those with weakened immune systems, and the elderly are especially susceptible to infection.


Penicillium consists of around 200 species of mold. with hues that range from blue and yellow to green and white, these molds require lots of moisture. They commonly cause food to spoil but also cause the development of nail fungus and asthma, as well as infections of the kidneys, liver, and lungs.


Fusarium is orange in color and grows on water damaged carpet and fabrics. Prolonged exposure to this mold causes mild allergic reactions, asthma, and severe respiratory conditions. Fusarium mold can also cause a rare eye infection called Fusarium Keratitis and people with eye problems are more vulnerable to the fungi.


Cladosporium is a common mold family comprised of 40 species. Tese vary in colors of green, brown, gray, or black. Unchecked exposure to Cladosporium can lead to pulmonary edema and emphysema.


The Aspergillus family is the least dangerous of the toxic molds. It consists of over 100 species, only 16 of which can cause illness in humans. Additionally, none are fatal. Commonly found indoors, this mold is yellow-green. Neglecting to treat its symptoms can lead to respiratory infections and inflammation of the lungs.

Tackle Mold with Bio Pro Mold Inspections and Testing

There are a lot of toxic molds out there, so knowing the symptoms and identifying which type of mold you are dealing with can protect your health. If you suspect that mold is lurking in your home, call Bio Pro Mold Inspections and Testing. We proudly serve Houma, Baton Rouge, and New Orleans, as well as the surrounding areas in Southeast Louisiana.