Goldfish should be catfish with pigment mutation, which is very rare and may have research value.

Catfish, the scientific name of catfish, also known as silver carp, sticky fish, pond lice fish and raw fish. This kind of fish is characterized by no scales, sticky body surface, flat head, wide mouth and four whiskers on the upper and lower jaws. The best eating season for catfish is between mid-spring and mid-summer. Catfish is not only as nutritious as other fish, but also has tender meat, delicious taste, less thorns and easy digestion, which is especially suitable for the elderly and children.