 It was transferred from the genus "Sulfolobus" to the new genus "Saccharolobus" with the description of "Saccharolobus caldissimus" in 2018.With a diameter between 0.7-1.5 µm, this organism thrives at a pH and temperature optima of 3.0 and 80 °C, respectively.Given the extreme conditions required for the growth of this microbe it is considered a thermoacidophile, as all organisms in the family Sulfolobaceae.