Autumn is getting stronger, the yellow jaw fish survives the rotten body of the square, the explosive death of streptococcus, and at this time it will usher in the threat of small melon worms. Yellow jaw fish such as scaleless fish are naturally delicate, and experienced farmers are very clear at this time to carefully "care", and doing these points daily will greatly reduce the risk of yellow jaw fish infected with small melon worms.
First, the water environment
The suitable breeding water temperature of small melon insects is 15 to 25 degrees Celsius. Its adults can secrete a colorless, transparent, elastic cyst, usually round or ovate, that sinks to the bottom of the water or other solids. So in terms of water environment:
1. Improve the water temperature: factory breeding can be through boilers and other ways, and the outer pond can be adjusted by means of water level;
2. Gentle insect repellent: use paprika and ginger, plant repellent, etc. to sprinkle regularly to gently drive away small melon insects in the water;
3. Regular bottom modification treatment of residual bait feces: in autumn, more use of biological bottom modification - bacillus, biological bacteria, winter water temperature is low, use oxygen
Chemical bottom modification; maintain a good substrate.
4. Fertile water overwintering: Before the water temperature drops to 15 degrees, be sure to fertilize the water. It is recommended to choose biological fermentation organic fertilizer to avoid muddy water and lean water, once it appears, it will create an environment for the outbreak of small melon worms.
Second, the physique of the yellow jaw fish
If the yellow jaw fish is not in good health, it is easier to give small melon worms to take advantage of the opportunity, and serious diseases will be secondary to bacterial diseases.
1. Before wintering, reasonable control of materials, especially seedlings, it is recommended to reasonably control materials 1-1.5%. At the same time, bile acids, multi-dimensional, etc. are added to protect the liver, promote the digestion and absorption of nutrients such as fat, and focus on enhancing physical fitness and improving immunity.
2. Feed in moderation during the overwintering period, while maintaining a strong body. For example, in the warm winter, you can moderately feed bodyguard materials, rapeseed cakes, etc., and at the same time, there is the role of fertilizer water, the best of both worlds.
3. Feeding during the opening of spring. As the fish slowly opens its mouth, it should be reasonably fed to promote the recovery of the fish' physique.
4. When mixing daily, you can choose a plant repellent with good permeability to kill small melon insects and inhibit the parasitism of small melon insects.
Third, early detection and early treatment
If it is found that the yellow jaw fish floating head, swimming pond, climbing the edge of the pond, opening a full oxygen pump, spraying oxygen is not effective, a few serious appearance of rotten body, rotten mouth, body deformation, and even dead fish. At this time, it is necessary to initially consider the infection of small melon worms, and timely microscopic examination. Although small melon worms are difficult to treat, they are relatively easy to deal with early. The following methods have a certain effect:
1. Artemisia annua, the reference amount is 0.3 to 0.4g per kilogram of body weight, mixed and fed, continuous use for 5-7 days;
2. Methylene blue, the reference amount is 2g per cubic meter of water, the whole pool is sprinkled, continuous use for 2-3 days;
3. Paprika and ginger, the reference amount is 0.8-1.2g and 1.5-2.2g per cubic meter of water, respectively, add water and boil for 30 minutes, even the residue with juice is sprinkled in the whole pool, continuously used for 3-4 days;
4. High penetration plant repellent safe insect repellent, the main internal administration assisted by spilling.
(The article comes from the public platform of the Aquatic Insect Resistance Alliance, please indicate the source when reprinting)