The term "golden fish" often refers to the popular pet known as the goldfish. These small, freshwater fish are commonly kept in aquariums and ponds. They are known for their vibrant orange or gold coloration and can grow to various sizes depending on their environment and care. Goldfish are part of the Carassius auratus species and are native to East Asia. They are social creatures that thrive in groups and require clean water and proper filtration to stay healthy. With proper care, goldfish can live for many years, sometimes even exceeding a decade.