Order
Common name: Blue-green algae
Scientific name: Nostocales
Nostocales is an order of cyanobacteria, commonly known as blue-green algae, which are photosynthetic and often found in freshwater environments. They are known for their nitrogen-fixing abilities, forming symbiotic relationships with various plants and fungi. In reef tanks, they can sometimes be seen as a part of the live rock microfauna, contributing to the biological diversity. However, they can also proliferate excessively under certain conditions, leading to blooms that may need to be managed to maintain water quality and aesthetics.