From 65438 to 0992, experts from Hubei Animal Husbandry Bureau, Deng, Wang, Wang and others inspected Yangxin, and agreed that Yangxin dolphin was a local species with unique characteristics. When 1998 was broadcast on CCTV, it used the word "Tunniao" and read Tun (the dialect of Yangxin dialect).

Its feathers are the same as ducks, only white. The forehead is a bit like a goose. But feathers are bigger and thicker than goose feathers. The soles of the feet are yellow, just like duck's feet. It is not a muscovy duck or a domestic duck. Because domestic ducks and muscovy ducks are generally hemp and mandarin ducks. But there is no white one. The nourishing dolphin is pure white.