Chromatiaceae

Chromatiaceae
Scientific classification
Kingdom:	Bacteria
Phylum:	Proteobacteria
Class:	Gammaproteobacteria
Order:	Chromatiales
Family:	Chromatiaceae
Genera
Allochromatium Amoebobbacter Chromatium Halochromatium Isochromatium Lamprobacter Lamprocystis Marichromatium Nitrosococcus Pfennigia Rhabdochromatium Rheinheimera Thermochromatium Thioalkalicoccus Thiobaca Thiocapsa Thiococcus Thiocystis Thiodictyon Thioflavicoccus Thiohalocapsa Thiolamprovum Thiopedia Thiophaeococcus Thiorhodococcus Thiorhodovibrio Thiospirillum

The Chromatiaceae are the main family of purple sulfur bacteria. They are distinguished by producing sulfur globules within their cells. These are an intermediate in the oxidization of sulfide, which is ultimately converted into sulfate, and may serve as a reserve. Members are found in both fresh and salt water, and are especially common in stagnant pools.

Chromatiaceae has been the cause for some low-oxygen lakes turning "blood red" like in San Angelo, Texas USA. http://www.foxnews.com/scitech/2011/08/02/end-times-texas-lake-turns-blood-red