Secretary General

Cyprinidae and Pseudomonas

Collection

zero Useful+1

zero

Commonly known as Diaozi, Changdiao and Caidiao, the fish is a member of the Cypriniformes Cyprinidae^{[1 ]} Small and medium-sized fish. The body is slender, slightly cylindrical, and the abdomen is round without ribs; The head is short and slightly flat on the side; The kiss is longer, equal to or slightly greater than the distance between eyes; Eyes are small and in upper lateral position; The eye space is rather wide and convex, larger than the eye diameter; Two nostrils on each side, near the anterior edge of the eye; The posterior edge of the anterior nostril is provided with a half moon shaped nasal flap, with a small mouth, anterior position, oblique fissure; The upper jaw is slightly longer, and the back end of the upper jaw extends below the front edge, without any need; The gill hole is medium and large. The operculum is not connected with the isthmus; The hypopharyngeal bone is long and narrow, with grooves on the tooth surface of the hypopharyngeal teeth, and the tooth tip is pointed and curved; The body is covered with small round scales, the lateral line is complete, slightly bent downward above the middle of the pectoral fin, and moves backward in the middle of the caudal handle; The starting point of the dorsal fin is about opposite to the starting point of the ventral fin, the lower side of the pectoral fin, and the caudal fin is bifurcated; The back of the body is bluish yellow, and the lower side is silvery white; The dorsal fin and caudal fin are greenish gray, and the abdomen is light yellow.^{[2 ]}

The croaker is distributed in various water systems south of the Yangtze River in China,^{[2 ]} It lives in the middle and lower water bodies of rivers and lakes.^{[3 ]} Temperament is more modest,^{[4 ]} Swim fast and active.^{[5 ]} It mainly feeds on aquatic invertebrates such as beetles, insects and insect larvae, and also feeds on small fish. They lay eggs and breed in the rapids in the middle and upper reaches of the Yangtze River, and the young fish enter lakes and tributaries along the river for fattening.^{[3 ]}

It can be mixed with farmed fish and is one of the common economic fish in Poyang Lake.^{[4 ]} The fish is edible, with fine meat and good taste.^{[1 ]} It is said that the fish can eat the floating membrane floating on the water surface and also play a role in cleaning the pond.^{[5 ]}

Foreign name: Ochetobius elongatus Kner
Alias: Diao Zi 、 Wheat straw 、 Chang Diao 、 Stilt
Chinese scientific name: Secretary General
circles: Animal kingdom

door: Chordate
Outline: Fishes
order: Cypriniformes
section: Cyprinidae
genus: Secretary General

catalog

morphological character

Announce

edit

The body is slender and nearly cylindrical. The head is small and conical. Small mouth, end position, Oral fissure Straight, no need. Hypopharyngeal teeth 3 lines, wide and smooth, with hooked ends. The dorsal fin has no hard spines, and its starting point is opposite to the ventral fin. Caudal fin The bifurcation is deep, and the ends of both leaves are sharp. The back of the body is Turquoise , the abdomen is silver, and there is a light yellow green strip above the middle of the body side Longitudinal zone ； Bipartite fin and Gluteal fin Orange, tail fin grayish black. appearance Seeming to be honest , but with a mild temper.

Reproductive cycle

Announce

edit

He has the habit of wandering in the Jianghu. From July to September every year, they enter lakes for fattening and return to rivers and rapids for reproduction in the reproductive season. The reproductive season is from April to June, Sexual maturity The age is 3-5 winter age. The spawning place needs running water, but cannot breed in still water. Although the growth rate is not fast, the largest individual is only more than 10 kg, and the most common is 0.5-1 kg.

food

Announce

edit

The food is mostly animal ingredients, such as Aquatic insect 、 Cladocera , small fish, shrimp, etc.

distribution

Announce

edit

our country Yangtze river basin It is produced in all kinds of water bodies to the south.

Novice on the road

Growth task Getting Started with Editing Edit Rule Edit by myself

I have questions

Content query Online Service Official post bar Feedback

Complaints and suggestions

Report bad information Failed to appeal through entries Complaint of infringement information Blocking query and unblocking

Jinggong Network Anbei No. 1100000200001