anaerococcus hydrogenalis anaerococcus hydrogenalis anaerococcus hydrogenalis is a bacterium from the family peptoniphilaceae. it is present in vaginal discharges and ovarian abscesses. presence of anaerococcus hydrogenalis in the gut metabolism and their coline consumption has been associated to cardiovascular diseases. contrary to most of the species in this genus, anaerococcus hydrogenalis is indole-positive. also, some strains in this specie can produce urease. anaerococcus hydrogenalis scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: peptoniphilaceae genus: anaerococcus species: a. hydrogenalis binomial name anaerococcus hydrogenalis(ezaki et al. 1990) ezaki et al. 2001 synonyms peptostreptococcus hydrogenalis