Perspicuibacter marinus is smooth, lenticular, light yellow, semi-translucent, circular colonies with a fluttered edge found on surface seawater at Muroto city, Kochi prefecture, Japan. “Cells contain carotenoid(s), and the dominant carotenoid that anatomically similar to beta carotene. Cells are 0.3–0.860.8–3.0 mm, grow at 15–31 uC (optimally at 22–30 uC), at pH 7.5–8.5 (optimally at pH 8.5) and with 2.0–3.5% (w/v) NaCl (optimally with 3.0 %)” according to Teramoto M in the article Perspicuibacter marinus gen. nov., sp. nov., a semi-transparent bacterium isolated from surface seawater, and description of Arenicellaceae fam. nov. and Arenicellales. For an energy source it utilizes Pyruvate as a single carbon source and does not degrade casein, chitin or starch. The 2-9 strain is a gram-stain-negative, non-motile, mesophilic, aerobic, rod-shaped bacterium.
