Nothobranchius hoermanni is a species of brightly colored seasonal killifish in the family Nothobranchiidae. This species is endemic to seasonal freshwater habitats in central Tanzania. It is currently known from ephemeral pools and marshes associated with the Mhwala system in the upper Wembere drainage, as well as the Wala system, a tributary of the Malagarasi drainage. The type locality is associated with the headwaters of the Mhwala system.[1]