The Prussian carp (Carassius gibelio, but sometimes Carassius gibelio gibelio and, before 2003, Carassius auratus gibelio) is a member of the family Cyprinidae, which includes many other fish such as the common carp, or the smaller minnows. It is a medium-sized cyprinid, and does not exceed a weight of 6.6 pounds (3 kg) and a size of 45cm. They are usually silver, although other color variations exist. Prussian Carps are the wild form of the goldfish. They are omnivorous and feed on plankton, invertebrates, plant material and detritus. Originally from Asia (Siberia), they have been introduced to and are now inhabit lakes, ponds, and slow-moving rivers throughout Europe and Asia.