Longtou Fat Head Fish [Heilongjiang Baoqing Specialty]

What is Longtou Fat Head Fish? Authentic Heilongjiang Baoqing specialty: Longtou Fat Head Fish

Summary:Do you want to know what Longtou Fat Head Fish is? This article is a detailed introduction to the special product of Baoqing, Heilongjiang Province - Longtou Fat Head Fish. It was compiled by the editorial team of China Specialty Network after reviewing and collecting relevant information about Longtou Fat Head Fish. The full text takes about 16 minutes to read, mainly including the basic introduction of Longtou Fat Head Fish and its nutritional value? What are the product features of Longtou Fat Head Fish? How did the history of Longtou Fat Head Fish come about? Wait

Basic Introduction of Longtou Fat Head Fish

The fat head fish produced in Longtouqiao Reservoir (Longhu Nature Reserve) in Baoqing County is also known as Longtou Fat Head Fish. The dragon head fathead is a specialty of Baoqing County, Heilongjiang Province, and one of the the four famous domestic fishes in China. Longtou chubby fish has a strong physique, no pollution, a delicious and pure taste, and tender and elastic meat. Fish are rich in amino acids, unsaturated fatty acids, and various trace elements required by the human body, with high nutritional value. It can prevent diseases such as hypertension and cardiovascular disease, fight against aging, and prevent gynecological diseases such as cancer

Origin Environment

Naoli River is a river in the hinterland of the Sanjiang Plain, supplied by a mixture of rain and snow. Its average annual runoff is 1.98 billion cubic meters, with large interannual variations in runoff, alternating between wet and dry years. There are two flood seasons in a year, the spring flood season from April to May and the autumn flood season from September to November. The rivers in the basin are typical marshy rivers

The two banks of the Naoli River are important wetland resources in the Sanjiang Plain, mainly including the national Qixinghe Wetland Reserve, the provincial Dongsheng Wetland Reserve, the Yanwo Island Wetland Reserve, and the Changlin Island Wetland Reserve. The lush aquatic plants and endless fish and shrimp attract ducks, gulls, cormorants and other permanent residents here, and also become temporary residences for white swans, geese, red crowned cranes, and mandarin ducks. At the turn of spring and summer, this place is truly a gathering place for hundreds of birds, with birds singing and swallows dancing, golden scales swimming, and fish leaping over the dragon gate. In December 2012, Longhu Tourist Scenic Area was rated as a national AAA level scenic spot by the Tourism Bureau of Heilongjiang Province and a provincial-level water conservancy scenic spot by the Water Resources Department of Heilongjiang Province

Longtouqiao Reservoir (Longhu Nature Reserve) has relatively superior natural conditions and a temperate monsoon climate. The average annual precipitation is 518mm, belonging to the semi-arid zone. The sunshine duration is relatively long, with an average annual sunshine duration of 2509 hours. The annual average relative humidity is 66%, and the absolute humidity is 7.7mb. There are many types of soil in this area, with black soil, meadow soil, paddy soil, and swamp soil accounting for more than 84.55% of the cultivated land area. Dark brown soil is mainly used for forestry purposes. This area is a natural treasure trove for the development of green food and is one of the organic food bases certified by the international EU organization

The catchment area of Longtouqiao Reservoir is 1730 square kilometers. The area above the reservoir is mountainous, with a steep slope and good forest vegetation downstream. Its runoff conditions are superior to the interval, and the runoff coefficient should be slightly larger than the downstream interval. From the perspective of rainfall and runoff conditions, the average annual water volume of Longtouqiao Reservoir is 271 million cubic meters

After the completion of the reservoir, research institutions and colleges have conducted years of water quality testing, and the results show that the water quality of the reservoir is non polluting and classified as Class 3, which is very suitable for the development of fishery production. The biological population in the reservoir is abundant, and the water quality is suitable for the growth and reproduction of most warm water fish. The content of plankton in the water body is high, which is very suitable for the food requirements of fat headed fish

Quality and Technical Requirements

1. Origin Requirements

1. Origin Environment: It should comply with the requirements of GB18407.4 and GB/T19630.1

2. Water area: The water area of the lake area is ≥ 1000 hectares

3. Water quality: It should meet the conditions of abundant water volume, good water quality, and no pollution, and comply with the provisions of GB11607 and NY5051. The dissolved oxygen content of the lake water should be ≥ 5mg/L; Transparency ≥ 250px; The pH value ranges from 8.5 to 9.0

2. Free range of Fish Species

1. Source of Fish Species: Fish species of the Longhead Fat Head, including summer flower fish species and first instar fish species, should be bred or purchased in accordance with the provisions of GB/T19630.1-2005

2. Fish species handling: The fish species of Longhead Panhead should be disinfected and quarantined before being stored

3. Fish species quality: The quality of the fry and fish species of the fathead fish should comply with the provisions of GB/T11778, achieving neat specifications, strong physique, intact scales, bright color, no damage to the body, lively swimming, and strong swimming ability

4, stocking density; According to the growth law of the dragon head fathead and the biological basis of the bait in the lake, it is adjusted year by year to control it at an optimal balance point that takes into account the yield, starting size and production cycle

Empirical values: 30 tails/667 ㎡ to 50 tails/667 ㎡

6. Release ratio: The water quality has a high degree of fertility, and the number of phytoplankton is above 5 million/L (with a wet weight of nearly 10mg/L). The release ratio of bighead fish species is between 70% and 80%; The number of phytoplankton is below 1 million/L (with a wet weight of nearly 10mg/L) (with a biomass of less than 3mg/L), and the proportion of organic product leader fathead fish released is between 60% and 70%

7. Free range specification: The free range specification for the fathead fish species is ≥ 325px

8. Release time: The release time for the Longtou Panhead fish species is before the ice sealing in late autumn and early winter each year (before mid October)

III. Feeding Management

1. Fertilization and Feeding; The growth of the dragon head fathead depends on the natural diet, and generally no additional feeding and fertilization are required

2, management; The daily management of Longtou Fat Head Fish mainly involves doing a good job in drought prevention, flood prevention, escape prevention, pest prevention, theft prevention, and timely fishing. To maintain good water quality of the water source, regularly monitor the amount of plankton, transparency, and growth rate of fish in the water

Fourth, Disease Prevention and Control

Disease Prevention of Fish Seedlings and Species

Before releasing the fish seedlings and species of Longtou Fat Head Fish, disinfect the breeding pond with 80kg/667 ㎡ to 100kg/667 ㎡ quicklime. When fish species enter the pond, they can be soaked in 3% saline solution for 3-5 minutes. If necessary, take medication for disease prevention once a year in the susceptible season of April, June, and September, and follow the regulations of NY5071. Retrieve dead fish in a timely manner and bury them in the soil. The fishing gear used in catching diseased fish should be soaked in 3% saline solution or 20 mg/L potassium permanganate for 20 minutes

Fifth, Prevention and Control of Fish Diseases

1. The health of bighead fish is mainly ensured through optimized management, biological control, and other methods. All measures should aim to improve the disease resistance of fish. For diseased fish, natural remedies should be given priority

2. When necessary, it is allowed to use quicklime, bleaching powder, and potassium permanganate to disinfect water bodies to prevent the occurrence of aquatic diseases. When the pollution range of lake water is large or there is a large-scale occurrence of fish diseases, the water body can be replaced through the entrance and exit gates of the lake area

3. In cases where preventive measures and natural medicine treatments are ineffective, the use of conventional fishing medicines is allowed

4. It is prohibited to use antibiotics, chemically synthesized antiparasitic drugs, chemically synthesized fishing drugs, and hormones to disinfect and treat the head fish and its growth environment

Geographical Indication

The protected area for Longtou Fat Head Fish geographical indication products is the natural lake area of Longhu Nature Reserve (Longtouqiao Reservoir) in Baoqing County, Heilongjiang Province, with a water area of 3200 hectares. The geographical coordinates are from 131 ° 31 ′ E to 133 ° 00 ′ E and from 45 ° 43 ′ N to 46 ° 02 ′ N. This region belongs to the cold temperate continental climate, with an average annual temperature of 3.2 ℃, an average annual precipitation of 510.7mm, a frost free period of 145 days, and an average annual sunshine hours of 2491 hours. Mild climate, abundant natural resources, and superior ecological environment

What is the nutritional value of Longtou Fat Head Fish

Edible value: Longtou chubby fish has a strong physique and is pollution-free; Its taste is delicious and pure, with tender and elastic meat; Stew to make tangbai, steam until it melts in the mouth. High protein content and low fat content. Fish are rich in amino acids, unsaturated fatty acids, and various trace elements required by the human body

Medicinal value: It can improve brain function, enhance memory, prevent hypertension, cardiovascular and cerebrovascular diseases, and has medicinal value in anti-aging, prevention and treatment of gynecological diseases such as tumors. Pregnant women who frequently consume fatty fish can promote fetal brain development, while elderly people who frequently consume fatty fish can lower blood lipids and reduce the occurrence of dementia symptoms

What are the product features of Longtou Fat Head Fish

The bighead carp of the Longtou Fat Head Fish has a flattened and taller body, with a rounded abdomen before the base of the pelvic fins, showing a large head, small belly, and small tail, forming a streamlined shape. Head length is greater than body height; The front part is wide, with a blunt and round kiss. Oral position, with the mouth opening tilted upwards, the lower jaw slightly protruding, and the middle part of the upper lip very thick. Small eyes, located below the central axis of the head. Small scales, complete lateral lines. The pectoral fins are large, with their tips extending far beyond the base of the pelvic fins. The back and upper parts of both sides of the body are slightly black, the abdomen is silver white, and there are many irregular black spots on both sides of the body. The fins are gray white with many small black spots on them. The tail is small, noticeably smaller than similar fish tails. The silver carp, a type of bighead fish, has a whiter body and a thinner body compared to the bighead carp

How did the history of Longtou Fat Head Fish come about

The Naoli River is rich in fish production, with its specialty being the red bellied carp, commonly known as the "red bellied big carp". It is known for its high back, thick body, red belly, fast growth, large size, good fat content, high fat content, and delicious taste. It was once a tribute to the Qing Dynasty's court