What this video covers
The clip separates the colour black from the species people mean when they say black mold.
Stachybotrys is one species among many that present as dark. Plenty of common indoor molds are black without being that one, so colour alone identifies nothing.
The takeaway
You cannot identify a species by looking. If identification actually matters for your decision, that requires sampling rather than a photograph.
Read the full written guide: Toxic Black Mold Myths.