👉 Oligotropha is a type of protozoan that lives in aquatic environments, primarily in freshwater and brackish water. They are characterized by their large size, which can range from 10 to 50 micrometers (mm), and their internal structure consisting of two distinct sets of cells: the cell body and the cell wall. Oligotropha's cells have a single nucleus surrounded by a cytoplasm that is not visible. They are known for their