Myriophyllum is a genus of aquatic plants in the family Haloragaceae. These plants are commonly known as water milfoils, and they are found in freshwater habitats throughout the world.
Myriophyllum plants have feathery, pinnately divided leaves that are arranged oppositely along the stem. The leaves are typically green, but they can turn reddish or brownish in color under certain conditions. Myriophyllum plants produce small, inconspicuous flowers that are borne on spikes or racemes above the water surface.
In the aquarium hobby, Myriophyllum plants are highly valued for their attractive appearance and their ease of care. They are often used as background or midground plants, and their delicate, feathery leaves can add a sense of texture and depth to the aquarium. Myriophyllum plants prefer moderate to high light intensity and nutrient-rich water. They can be propagated by stem cuttings, which can be rooted in the substrate or floated on the water surface until they develop roots. Some popular species of Myriophyllum in the aquarium hobby include Myriophyllum aquaticum, Myriophyllum scabratum, and Myriophyllum spicatum.