Qinghai lake has a peculiar fish, called Gymnocypris przewalskii, indigenous fish to the qinghai-tibet plateau, qinghai lake is peculiar species, is the only large economy in qinghai lake fish, qinghai lake, is also a “water – bird – fish” the key species in ecology, qinghai lake naked carp was listed in 2004 China species red list of endangered species list.
We have learned, Gymnocypris przewalskii spawn every year during the period of the end of may to early August, from the north bank of qinghai lake to the south bank of salix river, spring river gee, cloth, and black river is the important place to spawn.
In single file, they cross the rocky bottom of the river and gather in its relative placidity to rest and gather strength for the long journey ahead. Migration of Gymnocypris przewalskii here form a “river water and river fish”, the world wonders.
But in Gymnocypris przewalskii migratory spawning season, part of Gymnocypris przewalskii will be stranded in the river. Since 2015, the official in qinghai total cost is 36.72 million yuan RMB in Gymnocypris przewalskii migration of salix river, river gee, Hal cover river dismantling of 2 meters high barrage, 7 XiuGaiJian terraced migration routes. Local people and monks with washbasin, buckets, such as tools, has launched a rescue stranded Gymnocypris przewalskii action.
Actually, Gymnocypris przewalskii is itself a freshwater fish, through in fresh water upstream to spawn reproduction, technically called migration. There are a lot of fish in the world are migratory habits, both in the sea, there are river fish, like the Chinese sturgeon, as well as salmon and so on. But compared with their living environment, Gymnocypris przewalskii can live down in qinghai lake, is a miracle in itself.
According to introducing, Gymnocypris przewalskii to migration, because of high salinity and high alkaline lake for their development, maturity is fatal. Only upstream, in the process of back rivers, Gymnocypris przewalskii gonad will gradually develop and mature. So, they meet in groups, upstream, in the smooth flow of the buha river, salliu river, chuangji river and its tributaries danshui river road spawning, bearing children. The farther the upstream distance, the longer the hatching and growth time of eggs and larvae in fresh water, the higher the survival rate of juvenile fish. After the small fish grow up, they will return to qinghai lake.