👉 Tetratostichococcus is a Gram-negative, rod-shaped bacterium that belongs to the family of Bacillariomycetes, commonly known as bacteria. It is commonly found in aquatic environments such as lakes, rivers, and swamps. Its cells are composed of multiple layers, with a cell wall made up of cellulose and a cytoplasm containing proteins and nucleic acids. Tetratostichococcus can be pathogenic if it enters the bloodstream and causes symptoms