An eel that disappeared for more than 20 years reappears in Chishui River

Chishui River is the only "original river" without dams on the main stream of the first-level tributary of the Yangtze River. It is an important ecological barrier in the upper reaches of the Yangtze River and the Three Gorges Reservoir area. On January 1, 2017, the Chishui River Basin (Zunyi Section) took the lead in implementing a comprehensive fishing ban as a national pilot project.

On April 28, 2022, the Institute of Hydrobiology, Chinese Academy of Sciences, collected and captured an eel nearly two feet long during scientific research and monitoring in the Fuxing section of the Chishui River. According to researchers from the Institute of Hydrobiology, Chinese Academy of Sciences, the indigenous fish eel in Chishui River has disappeared for more than 20 years. It is very rare to reappear in Chishui River this time.

Chishui River indigenous fish eel

According to monitoring by the Institute of Hydrobiology of the Chinese Academy of Sciences, since the fishing ban was implemented in the Chishui River Basin in 2017, the fish resources of the Chishui River have recovered significantly. Indigenous fish species that have disappeared for many years, such as eels, fine-scaled pomfret, different swim bladders, and red-lipped loaches, have returned to the Chishui River. appeared; the population of rare fish such as Yangtze sturgeon and mullet increased significantly. Among them, the monitored number of Yangtze sturgeons increased from 0.1 fish per year before the fishing ban to 72.3 fish per year, and the number of mullet fish increased from 3.4 fish per day before the fishing ban to 8.3 fish per day; the fish resources increased significantly, and the single-vessel fishing output increased from 3.4 fish per day before the fishing ban. The previous 4.1 kilograms per boat per day increased to 8.0 kilograms per day per boat, a growth rate of nearly 100%; the fish breeding situation improved significantly, and the number of early fish resource species collected in the river section of Chishui City increased from 31 species before the fishing ban to 40 species, the breeding activities of grass carp were monitored in both 2018 and 2020. In 2020, the breeding activities of the different-swimming catfish and the round-nose catfish were also monitored for the first time. The breeding scale of large and medium-sized fishes such as the white turtle and the Chinese barbed barbel was obvious. Increase.

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