Potamidae is a family of freshwater crabs commonly found in rivers and streams across various regions, particularly in Africa, Asia, and South America. These crabs are adapted to life in freshwater environments and play a significant role in their ecosystems by contributing to the breakdown of organic matter. Members of the Potamidae family exhibit a range of sizes and colors, often featuring a flattened body that helps them navigate through their aquatic habitats. They are primarily herbivorous or detritivorous, feeding on plant material and decomposing organic matter, which aids in nutrient cycling within their ecosystems.