Carassius auratus, commonly known as the goldfish, is a freshwater fish belonging to the family Cyprinidae. Known for its vibrant colors and adaptability, the goldfish thrives in ponds, tanks, and slow-moving waters. It is distinguished by its long, flowing fins and diverse colorations, ranging from gold to white.

Carassius auratus, commonly known as the goldfish, is native to East Asia, specifically China. It has been widely domesticated and introduced to many regions across the world, but its original wild populations are found in the river basins and lakes of China.

Goldfish naturally inhabit slow-moving freshwater bodies such as rivers, lakes, ponds, and ditches. They prefer environments with a moderate temperature range, typically between 20°C to 25°C (68°F to 77°F), although they are quite hardy and can withstand temperatures outside this range.

In their native habitat, goldfish occupy the ecological niche of benthic and pelagic feeders. They are omnivorous, consuming a variety of food sources including plant material, small crustaceans, insects, and detritus. Their adaptability in diet allows them to thrive in varied environmental conditions, contributing to their success as a species both in the wild and in captivity.