Corydoras, also known as Cory Cats, are a small genus of bottom-dwelling freshwater catfish native to South America. They are recognized by their armored bodies, protected with bony plates, and their barbels, or "whiskers," which help them find food in the substrate. With over 160 species ranging in size from one to five inches, Corydoras are popular in home aquariums for their peaceful nature and engaging behaviors. As efficient scavengers, they help keep the aquarium clean by consuming leftover food. Despite their small size, Corydoras are hardy and adaptable, making them suitable for aquarists of any experience level. They prefer to school with their own species and are sensitive to subtle intraspecific differences. It is highly recommended to keep a group of at least five Corys of the same species to avoid stress-related issues due to insufficient schooling. The ideal water parameters for Corydoras are Temperature: 72°F to 81°F (22°C to 27°C), pH Level: 7.0 to 8.0, although a range of 6.0 to 7.8 is also considered acceptable, and Water Hardness: 3 to 19 dGH, with some variation depending on the species. Maintaining stable water conditions is essential for the health and well-being of Corydoras. Regular water testing and changes are necessary to keep these parameters within the ideal range. It's important to research the specific needs of your Corydoras species, as some may require slightly different care.