Erhai Lake was finally named "Er" because it is "like a human ear" and "like a moon holding Er", hence the name. Erhai Lake, located in Dali Bai Autonomous Prefecture, Yunnan Province, is the second largest freshwater lake in Yunnan Province. Erhai Lake was also called Ye Yushui, Ye Yuhe, Ye Yuze, Xi 'er River, Hull River and Kunmichuan in ancient times.
Ecological characteristics:
Erhai Lake is rich in aquatic resources, including carp, bow fish, ray fish, fine-scaled fish, crucian carp, grass carp, chain fish, herring, shrimp and crab.
The annual output is several hundred thousand Jin, among which the bowfish is the most famous, with slender figure, fine scales and fresh meat, so-called "fish kui", and the local "fish pottery jar" is a specialty of Erhai Lake.
Aquatic plants include cauliflower, water chestnut, arrowhead, water chestnut and so on. Rare waterfowl include red-billed gull, flat-nosed duck, crane, common crake, red-breasted frog, black water duck, colored snipe, crested pheasant, gray snipe, red-billed gull, silver gull, gray-backed gull, etc.