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Goldfish, scientifically known as Carassius auratus, are a species of freshwater fish that belong to the family Cyprinidae. They are native to East Asia and have been domesticated and bred for thousands of years as ornamental pets. Goldfish come in a variety of shapes, sizes, and colors, including the classic orange color that is commonly associated with them. They are known for their long, flowing fins and tails, which can be either single or double-tailed. Goldfish are hardy fish that can live in a wide range of temperatures, making them suitable for indoor aquariums as well as outdoor ponds. They are omnivorous and will eat a variety of foods including flakes, pellets, freeze-dried, and frozen foods. Goldfish can be trained to do tricks, such as eating from your hand or swimming through hoops, making them popular pets for children and adults alike. Goldfish are social animals and should be kept in groups of at least two. They are also known to be intelligent and curious, often interacting with their owners and exploring their surroundings. Goldfish can live for many years, with some individuals living for over 20 years if properly cared for. In summary, Goldfish are a species of freshwater fish that have been domesticated as pets for thousands of years, they come in various shapes, sizes and colors, They are hardy and omnivorous, social animals that can be trained to do tricks, and can live for many years if properly cared for.