Carassius auratus, commonly known as the goldfish, is a small freshwater fish belonging to the family Cyprinidae. Native to East Asia, it has been domesticated for centuries and is popular in aquariums and ornamental ponds. Goldfish come in various colors and shapes, with some varieties featuring long fins and unique body forms. Goldfish are social creatures that thrive in groups and can live for many years, often exceeding a decade with proper care. They are omnivorous, feeding on a diet of flakes, pellets, and live or frozen foods. Their adaptability makes them suitable for both beginners and experienced aquarists.