Erhai Lake is rich in more than ten kinds of original indigenous fish, including carp, bow fish, swim fish, fine-scaled fish, crucian carp, grass carp, chain fish, herring, shrimp and crab, and 11 kinds of exotic fish.

Erhai Lake is mainly located in Dali City, with its north bank connecting the southeast corner of Eryuan County, the east foot of Cangshan Mountain and the west foot of Yu 'an Mountain. The northern waters of Erhai Lake originally belonged to Eryuan County. On January 1, 24, after Shuanglang and Jiangwei towns were included in Dali City, all the waters belonged to Dali City.

eryuan county has become a situation bordering the north bank. Along the lake area, there are Shuanglang and Jiangwei towns in the north, Xizhou, Bay Bridge, Cities and Qiliqiao towns in the east, Xiaguan and Fengyi towns in the south, and Caise and Haidong towns in the west. Eryuan River at the outlet is located in Xiaguan, Dali City, at the southwest end.

Extended data

Cangshan and Erhai are located on the eastern edge of the most powerful radial structural belt in China, that is, the Kangzang zigzag structural fold belt, which is a huge deep fault with the crust rising in the west and falling in the east. Erhai fault is the boundary between the central Yunnan Plateau and the Hengduan Mountain area in this area, and the strata are staggered and collapsed in the process of strong uplift, and the uplift blocks form Cangshan block mountain.

The subsidence block becomes a fault basin and the accumulated water becomes Erhai Lake, which is a typical inland fault basin. Its main structural line is NNW, long from north to south and narrow from east to west. The south, west and north sides of Erhai Lake are alluvial by rivers to form a flood plain, and eighteen streams and streams are connected horizontally to form a flood skirt.