Zhengzhou North Ring. According to Baidu map in Zhengzhou North Ring Aquatic World, it is the entire Central Plains region, the largest aquatic products wholesale base, Zhengzhou Egyptian pond fish wholesale market in the aquatic world inside. Egyptian pond fish is a common catfish, also known as Egyptian bearded catfish, leather bearded catfish, etc., in the biological classification belongs to the animal kingdom, Chordata, Scleractinia, Catfish, Catfish, bearded catfish family.