Hydrocotyle is a genus of aquatic and semi-aquatic plants in the family Araliaceae. These plants are found throughout the world, with a concentration of species in tropical regions.
Hydrocotyle plants have circular or reniform (kidney-shaped) leaves that are typically arranged in a rosette pattern. The leaves may be green, red, or variegated depending on the species. Hydrocotyle plants can be floating or rooted, and they may grow both emersed and submersed.
In the aquarium hobby, Hydrocotyle is a popular genus of aquatic plants known for their ease of care and versatility. They are often used as foreground or midground plants, and their circular leaves can add a sense of texture and depth to the aquarium. Hydrocotyle plants prefer moderate to high light intensity and nutrient-rich water. They can be planted in the substrate or attached to rocks or wood using fishing line or aquarium-safe glue. Some popular species of Hydrocotyle in the aquarium hobby include Hydrocotyle leucocephala, Hydrocotyle tripartita, and Hydrocotyle verticillata.