Corydoras catfish, commonly known as Cory cats or simply Corys, are popular freshwater aquarium fish. They belong to the Corydoradinae subfamily within the Callichthyidae family. These fish are beloved for their unique appearance, peaceful nature, and their role in helping keep aquarium substrates clean. Here are some key characteristics and care guidelines for Corydoras catfish:
Source: Tino Strauss, CC BY-SA 3.0 Appearance: Corydoras catfish are characterized by their armored appearance, with rows of bony plates covering their bodies. They have a flattened shape and are usually small, typically reaching lengths of 2 to 3 inches (5 to 7.6 centimeters). They come in various species, each with its distinct coloration and markings.
Temperament: Corydoras are peaceful, social fish that should be kept in groups of at least three or more, as they are highly sociable and feel more secure in larger groups. They get along well with other non-aggressive fish in a community aquarium.
Aquarium Setup: Corydoras prefer well-planted aquariums with hiding spots, as well as open areas for foraging and swimming. A tank size of 10 gallons or larger is suitable for a group of Corydoras. They appreciate fine sand or smooth gravel substrate, which is gentle on their barbels as they search for food.
Water Parameters: Corydoras are relatively hardy and can adapt to a range of water conditions. They prefer slightly acidic to neutral water with a pH range of 6.0 to 7.5 and a temperature range of 72-78°F (22-26°C). Providing stable water conditions is crucial for their health.
Source: Soulkeeper, CC BY-SA 3.0 Diet: Corydoras are omnivorous and feed primarily on the bottom of the aquarium. They eat a variety of foods, including sinking pellets or tablets, live or frozen foods like bloodworms, brine shrimp, and vegetable matter like blanched vegetables.
Health and Care: Corydoras are generally robust but can be sensitive to water quality. Regular water changes and proper filtration are essential to maintain their health. It’s important to avoid sharp or coarse substrates that could damage their barbels, which are sensitive sensory organs. Avoid introducing medications containing copper into the tank, as it can be harmful to them.
Behavior: One of the most charming aspects of Corydoras is their bottom-dwelling behavior. They sift through the substrate in search of food, helping to keep the aquarium clean. They are also known for their amusing “Corydoras wiggles” when they move in a somewhat jerky and rhythmic manner.
Corydoras catfish are excellent additions to community aquariums, especially for aquarists who want a combination of beauty, utility, and a peaceful demeanor. Their unique appearance and charming behavior make them a favorite choice for many fish enthusiasts.