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GB/T 39174-2020: Dark sleeper
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| GB/T 39174-2020 | English | 189 |
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Dark sleeper
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GB/T 39174-2020
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Basic data | Standard ID | GB/T 39174-2020 (GB/T39174-2020) | | Description (Translated English) | Dark sleeper | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B52 | | Classification of International Standard | 65.150 | | Word Count Estimation | 10,191 | | Date of Issue | 2020-10-11 | | Date of Implementation | 2021-02-01 | | Regulation (derived from) | National Standard Announcement No. 21 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39174-2020: Dark sleeper---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Dark sleeper
ICS 65.150
B52
National Standards of People's Republic of China
River Channa
2020-10-11 released
2021-02-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that certain contents of this document may involve patents. Publication of this document
The agency is not responsible for identifying these patents.
This standard was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China.
This standard is under the jurisdiction of the National Fisheries Standardization Technical Committee (SAC/TC156).
Drafting organizations of this standard. Jiangsu Zhongyang Group Co., Ltd., Nanjing Normal University, Nantong Longyang Aquatic Products Co., Ltd.
The main drafters of this standard. Xu Xiao, Lu Li, Yin Shaowu, Liu Jiumei, Qin Weilun, Qin Guixiang, Wang Peipei, Yan Bingbing, Zhang Guosong, Zhang Hongye,
Zhu Xinpeng.
River Channa
1 Scope
This standard gives the name and classification, main morphology and structure of the river Shatang Channa
Characteristics, growth and reproduction characteristics, genetic characteristics, testing methods and testing rules and result determination.
This standard applies to the germplasm detection and identification of the river snakehead snakehead snakehead.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 18654.1 Germplasm Inspection of Farmed Fishes Part 1.Inspection Rules
GB/T 18654.2 Germplasm Inspection of Farmed Fish Part 2.Sampling Method
GB/T 18654.3 Germplasm Inspection of Farmed Fish Part 3.Determination of Characters
GB/T 18654.6 Germplasm Inspection of Farmed Fish Part 6.Determination of Reproductive Performance
GB/T 18654.12 Germplasm Inspection of Farmed Fishes Part 12.Karyotype Analysis
GB/T 18654.13 Germplasm Inspection of Farmed Fish Part 13.Isozyme Electrophoresis Analysis
3 Name and classification
3.1 Scientific name
River sand pond snakehead.
3.2 Classification status
Osteichthyes (Osteichthyes), Perciformes (Perciformes), Gobioidei (Gobioidei), Sandton Channa
(Odontobutidae), Odontobutis.
4 Main morphological and structural features
4.1 External form
4.1.1 Shape
The body is elongated, the front is sub-cylindrical, and the rear is flat; the dorsal and abdominal margins are shallowly curved and the tail stalk is higher; the head is broad and flat, and the head width is greater than the head height.
The cheeks are rounded; the kiss is wide and short, and the length of the kiss is greater than the diameter of the eye. The upper and lateral position of the eye, slightly protruding, the eye interval is wide and concave, slightly larger than the eye diameter, and the front and bottom of the eye are horizontally breasted
The mastoid arrangement at the end of the protruding line (L5) is linear; 2 nostrils on each side; large mouth, end position, oblique cleft; protruding lower jaw, longer than upper jaw; wide gill hole
Large, without spines on the posterior lower edge of the front operculum, and the gill rakers are thick and short. The scales on the top of the head behind the eyes are arranged normally and are covered with tiles, without lateral lines, and the longitudinal scales are 34 to 41; chest
1 pair of fins; 2 dorsal fins, and the starting point of the first dorsal fin is above the base of the pectoral fin; the anal fin and the second dorsal fin are opposite; the caudal fin is rounded; the head and body are gray
Brown, with 3 to 4 wide and uneven saddle-shaped black patches spanning the back to the side of the body. There are black patches and spots on the head and ventral surface. First back
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