Thamnaconus septentrionalis fry culture method
The technology of a kind of green finfish and its cultivation method is applied in the field of green finfish seed cultivation, which can solve the problems of low seedling efficiency, difficulty in opening bait, and death of juvenile fish sticking to the wall, so as to avoid The effect of sticking to the wall, good aquaculture water environment, and maintaining the aquaculture water environment
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Embodiment 1
[0037] A method for cultivating green-finned horse-faced fish seed, comprising selection of broodstock and strengthening, natural spawning and collection, hatching, bait cultivation and strengthening, seed cultivation, commercial seedling, the specific steps are as follows:
[0038] 1. Broodstock selection and strengthening:
[0039] In May 2016, 216 wild broodstock were collected from the waters near Qingdao Hujiashan Wharf and Phoenix Island in Jinshatan, and 187 were artificially domesticated. The standard length of broodstock is 25.2 to 32.5 centimeters, and the weight is 244 to 574 grams. In the non-breeding season, there is no obvious difference between the male and female greenfin horsefaced puffer, and it is difficult to distinguish the male and female from the appearance. By comparing the anatomy of sexually mature broodstock, it can be identified simply and intuitively from the appearance and body shape. The parent fish with a larger body length and width ratio is a...
Embodiment 2
[0066] In this embodiment, except that the broodstock batches are different, other cultivation methods are basically the same as in Example 1.
[0067] In June 2017, 317 wild broodstock were collected from the waters near the wharf of Langya Port in Qingdao, and 285 were domesticated and survived artificially. The standard length of broodstock is 24.7-35.5 centimeters, and the weight is 215-580 grams. The broodstock were kept in separate ponds for temporary breeding. Because the temperature this year was higher than in the same period of previous years, intensive cultivation was carried out for about 7 days. In the first ten days of June, the broodstock began to spawn naturally one after another. From June 5th to June 20th, the fertilized eggs are collected for seed breeding, the water temperature is 21-24.2°C, and the spawning cycle is about half a month. After 35-45 days of seed cultivation, 339,000 lively and healthy commercial seedlings of 35-70 mm were cultivated, and th...
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