Roseomonas frigidaquae is a species of Gram negative, strictly aerobic, coccobacilli-shaped, light pink-colored bacteria. It was first isolated from a water-cooling system from an oxygen-producing plant in Gwangyang, South Korea. The species name is derived from Latin frigidus (cold) and aqua (water).
The optimum growth temperature for R. frigidaquae is 30 ðC, but can grow in the 12-37 ðC range. The optimum pH is 7.0, and can grow in pH 6.0-10.0.