Wetland introduction: In December 2009, Eryuan West Lake Wetland Park was officially rated as a national wetland park. There are 76 species in the wetland, including unique fish such as Erhai bighead carp, gray schizothorax, and Dali schizothorax. It is also the habitat of many overwintering birds. The purple water pheasant, a rare bird of great ornamental value, has the largest population distribution here and is also recognized as the most beautiful water bird in the world.