Agera is a genus of small, freshwater snails belonging to the family Planorbidae. These snails are commonly found in various aquatic environments, including ponds, lakes, and slow-moving rivers. They play a vital role in the ecosystem by helping to break down organic matter and serving as a food source for various predators. The shell of Agera snails is typically coiled and can vary in color and size. They are known for their unique reproductive habits, which include both sexual and asexual reproduction. Agera snails contribute to the biodiversity of their habitats and are often studied in ecological research related to freshwater ecosystems.