Corydoras is a genus of freshwater catfish with a broad diversity of body shapes and coloration. Corydoras are quite timid and are recommended to be kept in shoals of three upwards. Corys are mostly bottom feeders, so they should be offered sinking pellets as well as supplements of live and frozen foods.

Most corys prefer soft, acidic water. They can, however, tolerate a wide range of water conditions, including temperatures that are cooler than tropical. They do not do well in fish tanks with high nitrate levels. Their longevity in the aquarium is noteworthy.