Covers irregular, 0.5 x 15 microns in diameter, Gram-negative, flagella, cytoplasmic protrusions stationary phase. Sulfo-reducing forced with heterotrophic growth on complex organic substrates (yeast extract, peptone, tryptone, casamino acids) + S ° or thiosulfate (= electron acceptor) + H2 (= electron donor). Metabolites, CO2, acetate, ethanol, H2S. Mixotrophic growth on peptides in the presence of H2. Growth requires yeast extract (0.1%), it is stimulated by CO2. Optimal conditions: temperature 95 ° C (68-102 ° C), pH 6 (4.5 to 7) and 20-35 g NaCl / l (5-60 g / l), with a time of division 3.1 h. DNA: 65 mol% G+ C. One species isolated from sediments of shallow marine geothermal Greece Stetteria hydrogenophila .
