''Tumebacillus algifaecis'' is a species of

Gram positive In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. Gram-positive bact ...

, facultatively anaerobic,

bacterium Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

. The cells are rod-shaped and form spores. It was first isolated from an algal bloom in Taihu Lake, China. The species was first described in 2015, and the name is derived from Latin ''alga'' (algae) and ''faex'' (faecis sediment, scum) and refers to its original isolation from the algal bloom. The optimum growth temperature for ''T. algifaecis'' is 30 °C, and can grow in the 20-45 °C range. Its optimum pH is 6.5-7.5, and grows in pH range 5.5-9.5. The bacterium forms white colonies on

R2A agar R2A agar (Reasoner's 2A agar) is a culture medium developed to study bacteria which normally inhabit potable water. These bacteria tend to be slow-growing species and would quickly be suppressed by faster-growing species on a richer culture medium. ...

References

Bacteria described in 2015 Gram-positive bacteria Bacillales {{Bacilli-stub