The Thiocapsa genus was defined by Pfennig and Trüper (1971).
The isolation source of this species was the freshwater lake Lagunillo de Cardenillas (Cuenca, Spain). The type strain is Thiocapsa roseilacustris strain N5-Cardenillas. It is gram negative with cells of approximately 1.5 μm length and 0.8 μm width ± 0.2 μm. It possesses a mol% G + C content of 63.4%. The genome recovered as a MAG has 6,229,630 bp. MAGs representing composite clones within the same species are available at NCBI-GenBank (Biosample numbers SAMN40716411-SAMN40716415). Nomarsky, TEM and bright-field microscopy pictures are shown in the publication. This species and its associated microbiome are currently enriched and preserved at 4 ºC in bottles with the original lake water from 2m winter 2019 campaign and is available under request.