<em>Comatricha tenerrima</em> is a myxomycete belonging to the genus <em>Comatricha</em>, class Myxomycetes, order Stemonitidales. The species epithet tenerrima, meaning very delicate, likely refers to the particularly fine structure of its capillitium or sporangial walls. Like other members of the genus, <em>C. tenerrima</em> inhabits moist, decaying substrates such as rotting wood and leaf litter in forest environments, where the plasmodial feeding stage actively moves across surfaces to consume bacteria, yeasts, and organic particles. The transition to the reproductive stage results in the formation of stalked sporangia releasing spores for aerial dispersal. No geographic range information is provided in the current record. The species does not possess conventional biological traits such as body size or mass, and no quantitative data are available. <em>C. tenerrima</em> has not been assessed on the IUCN Red List.