Family Schizophyceae also known as cyanobacteria, blue-green algae or cyanophyta. The name Schizophyceae is derived from the Greek word "schizo" meaning to divide and "phyceae" which means algae. The family Schizophyceae is a group of aquatic, photosynthetic bacteria that are important in aquatic ecosystems. Synonyms for Schizophyceae include blue-green bacteria, blue-green microorganisms, and cyanophytes. The term "blue-green" is used because some cyanobacteria have a blue-green color due to the presence of phycocyanins and other pigments. These bacteria are important in nitrogen fixation, and they play a role in carbon fixation and oxygen production. They also have several industrial uses, including in the production of biofuels and as food additives.