rapidithrix rapidithrix rapidiothrix is a genus from the family of flammeovirgaceae with one known species (rapidithrix thailandica). rapidiothrix bacteria produces the antibiotics ariakemicin a and ariakemicin b. rapidithrix scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: flammeovirgaceae genus: rapidithrixsrisukchayakul et al. 2007 species r. thailandica synonyms rapidiothrix