China Aquatic Products Channel reported that when it comes to light barbed catfish, many locals in Conghua District of Guangzhou City have to start from childhood memories, and in the 90s of the last century, the Liuxi River in Conghua District can also see the light barbed catfish migrating and breeding in groups, but due to overfishing, this scene is now difficult to see.
In order to restore the wild aquatic resources of the light inverted catfish and improve the quality of breeding the light barbed catfish, in 2007, the LiuxiHe Guangdong Barbed Catfish National Aquatic Germplasm Resources Conservation Area was established in Conghua District. Today, Conghua will establish a light barbed catfish industrial system, through the establishment of Liuxi River light barb catfish breeding professional cooperative, the application for national geographical indication products and registered brand trademarks, the development of 20 Liuxi River light barb catfish fixed-point restaurants, etc., to achieve an annual sales volume of 120,000 catties (about 30,000 tails), annual sales of 8 million yuan.
"When I was young, in the season of fragrant rice flowers, in the evening, I and a group of friends quietly pressed the bamboo basket into the water, "bang", the rice flowers were submerged in the water, and the little guys that the little friends were waiting for had been included in the bamboo. Li Guanyin, manager of Guangzhou Yiquan Agricultural Development Co., Ltd. (hereinafter referred to as "Yiquan"), recalled that the "little guy" in his mouth was the light barbed catfish.
It is understood that the light barbed catfish is commonly known as juan fish, carp, carp family, catfish subfamily, barb catfish genus, the main features of the appearance is barb, light eye, large scales, body color shiny, the current market sold to 128 yuan / jin. Li Guanyin recalled that in the era of lack of materials, a fish can be exchanged for 5-10 kilograms of pork. As a traditional economic fish of LiuxiHe, the light barb catfish has become a "rare guest" of LiuxiHe due to overfishing for many years.
<b>Li Guanyin, manager of Guangzhou Yiquan Agricultural Development Co., Ltd. (left), and Xiao Jian, director of The Promotion Center for Livestock and Aquatic Products technology in Conghua District, Guangzhou (right</b>).
According to Xiao Jian, director of the Livestock and Aquatic Technology Promotion Center in Conghua District, Guangzhou, "In the 1990s, the phenomenon of migratory breeding of barbed catfish in groups in Liuxi River has disappeared, and now there are very few fish that can be caught, and now only a few dozen wild adult fish can be caught a year to supply the market, which is not as good as the number of fish in the previous school, and it is more difficult to collect species fish." ”
Located in the northwest of Conghua District in Guangzhou, China, the Liuxi River is formed by the convergence of many streams. Originating from the junction of Lütian Town and Xinfeng County in Conghua District, it has gathered a number of tributaries and finally flows into the Liuxi River Reservoir, which is called Liuxi River, also known as Lütian River. From north to south, it runs through Conghua District, with a total length of 156 kilometers and a basin area of 2300 square kilometers.
In order to protect the light barb catfish and its spawning grounds, as well as protect other economic fish and endemic fish resources in the south, the Ministry of Agriculture approved the establishment of the Liuxi River Light BarbEd Catfish National Aquatic Germplasm Resources Conservation Area in 2007, covering the main stream and important tributaries of the Liuxi River in Conghua District, with a length of 113 kilometers, an average width of 200 meters, and a total area of 2260 hectares. After the establishment of the protected area, the Agricultural Bureau of Conghua District set up various publicity boards along the Liuxi River to inform local residents and tourists of relevant management measures and laws and regulations, strengthen the supervision of fishery administration and law enforcement in accordance with the system of no-fishing area and fishing ban period in the Conghua section of the Liuxi River, severely crack down on illegal fishing in the Liuxi River by "electricity, poison and explosion", and investigate the degree of recovery of natural resources of light barbed catfish in the waters of the reserve.
At the same time, the Agricultural Bureau of Conghua District cooperated with Guangzhou Youcheng Aquaculture Co., Ltd. (hereinafter referred to as "Youcheng Company") to establish a domestication and breeding experimental base for the barbed catfish in Liuxi River. Since 2011, the Agricultural Bureau of Conghua District has successively collected the original species of Liuxi River Light Barbed Catfish. In 2014, the site successfully bred the first batch of Liuxi River Light Barbed Catfish fry. According to Xiao Jian, in 2016, the Conghua District Livestock and Aquatic Products Technology Promotion Center and Youcheng completed a total of 50,000 fry indicators such as the value-added release of the light barbed catfish in Liuxi River and the promotion of demonstration breeding, of which the fishery department of Conghua District first released 15,000 native light barbed catfish fry into the Liuxi River. The relevant person in charge of the Agricultural Bureau of Conghua District said that after 2017, it will also plan to release 50,000 fry of more than 10 centimeters per year to strengthen the breeding and stocking of the original species of light barbed catfish.
While the conservation work has been successful, the breakthrough of artificial breeding technology has added another stroke to the aquaculture market and breeding and stocking. According to Wang Aijun, director of Youcheng Company, Liuxi River light barbed catfish is more special, whether in form or flesh quality are different from other barbed catfish, other barbed catfish side line more than 26, only The side line of Liuxi River light barbed mackerel is 23-24, which is also the most prominent feature of identifying Liuxi River light barbed catfish and other barbed catfish varieties. Liuxi River light barbed catfish in nature only lays eggs once, every year in May to July rainy season, the Water level of the Lütian River rises, the water flow accelerates, the light barbed catfish will flock up against the current to find a suitable spawning ground to breed, and in August, the light barbed catfish will go down the river, grow fattening in the Liuxi River reservoir, which is its so-called "seven up and eight down" breeding characteristics, but the breeding characteristics of Juanyu can not meet the needs of the breeding market and value-added release.
In order to break the dilemma of a "seedling" in Liuxiheguang, Youcheng Company has increased the spawning frequency of broodstock from once a year to 4 or even 5 times a year through a series of technologies. Today, Youcheng has more than 800 broodstock (including reserve broodstock), more than 100 broodstock have the ability to reproduce, but the number of eggs laid by more than 100 broodstock is equal to the number of eggs laid by about 600 broodstock once, so can the quality of these eggs be guaranteed? Wang Aijun told the "Ocean and Fishery" reporter that in order to meet the nutritional needs of the broodstock of the Liuxi River Light Barbed Catfish spawning at such a high frequency, Youcheng Company strengthens its pre-spawn nutrition by adding feed, grain buds, multi-dimensional and other nutrients, and the broodstock that have spawned must also be treated through technology, so multiple spawning will not harm the broodstock, affecting the next spawning. Youcheng company's light barb catfish breeding center using large-scale breeding technology, broodstock originally mainly concentrated in April to August spawning, in the next two years Youcheng company will complete the upgrading of 13 ponds, through the construction of greenhouse heating to promote broods spawning one month in advance, so that you can lay more eggs twice a year, the number of fry will come up. Wang Aijun stressed, "If there is greater demand in the market in the future, we can also meet it." ”
In order to truly solve the worries of breeding Stream Creek Light Barbed Catfish, while restoring the germplasm resources of Light Barbed Catfish, it is even more necessary to increase the creation of the Conghua District Light Barbed Catfish "Famous Fish" brand. Xiao Jian said that the Agricultural Bureau of Conghua District plans to formulate breeding technical specifications and product standards, form a stable yield with excellent quality, fresh taste and unified specifications, and realize the continuous and stable supply of Liuxi River light barbed catfish throughout the year, and plans to establish a publicity base for the popularization of light barbed catfish in the future, and carry out publicity work on the light barbed catfish as a "famous fish" in Liuxi River, so that the general public and tourists can understand the history and future of the light barbed catfish in Liuxi River, and finally make the light barbed catfish a must-have dish on the table of citizens and tourists.
The relevant person in charge of the Agricultural Bureau of Conghua District said that the development of the ecological breeding of light barbed catfish in Conghua District, with the help of the opportunity of the "beautiful town" development strategy being implemented, combined with the development of ecological tourism in Liuxi River, excavated the edible, ornamental and health care values of Liuxi River light barbed catfish, and applied for national geographical indication products and registered brand trademarks through the establishment of Liuxi River Light Barbed Catfish Breeding Professional Cooperative, hoping to initially form the Liuxi River Light Barbed Catfish Industrial System by 2020, and develop 20 fixed-point restaurants of Liuxi River Light Barbed Catfish. The annual sales volume reached 120,000 jin (about 30,000 tails), and the sales volume reached 8 million yuan.
As an important ecological resource conservation area in the north of Guangzhou, Conghua District is the main agricultural product production area in Guangzhou, as well as the agricultural leisure and rural tourism destination in the Pearl River Delta. Conghua District will build the Liuxi River Light Barbed Catfish into a characteristic tourism product with cultural connotations, so that tourists can not only taste the deliciousness of the Liuxi River Light Barbed Catfish, but also understand the unique history of the Liuxi River Light Barbed Catfish, and better understand the precious resources of the wild Stream Stream Light Barbed Catfish, so as to achieve a double harvest of economic and social benefits.