1. Sensible Equipping Of Fry
Breeding large-sized fry in autumn is a key point of just how to enhance survival rate of fry over winter season. According to the conditions of water surface area, water level as well as other problems, equipping sensibly according to the actual situation to advertise the development of fry.
In a fish pond with a water deepness of 1.5 meters, 4,000 to 6,000 fish fry with a size of 7 to 8 cm are equipped, as well as the body length can get to 13 to 17 cm by the end of the year, which is of wonderful importance for boosting the breeding yield.
2. Separation Monitoring
The fry ought to be reasonably divided according to the various specifications, to ensure that the fry in the return fish pond have the same specifications, Due to the fact that the bigger dimension fry have a strong capability to get food and also a large quantity of food, if they are stocked with tiny size fry together, it will trigger the little fish to not get sufficient bait and trigger a decline in their physique.
The fry over 5cm must be grown in the grown-up fish pond, as well as the small fry need to be grown in an unique fish pond, so as not to create the fry of various sizes to contend for food, the solid ones are stronger as well as the weak are weak.
3. Avoidance Disease
After the fry go to the fish pond, it is needed to stop parasites and also the look of bubble illness. disease protection is the vital essential on how to look after fish fry, These are two circumstances that are very easy to run into after going into the fish pond. Bloodsuckers consist of Trichocarpus, Ringworm, etc. This can be treated with the corresponding medication. Typically, the probability of appropriate sanitation will be much smaller.
There are lots of variables that cause bubble disease. For example, if there is even more dissolved oxygen in the water, fish fry will certainly raise the incidence of bubble condition. If the aspects such as ammonia nitrogen are high, the position of the tail may likewise cause bubble condition. Drugs such as acetaminophen have a particular precautionary impact on this.
4. Cleaning Up Fish Ponds In Time
In ponds where fry are grown for two to three months, the water high quality normally starts to weaken, the all-natural lure is weakened, and some harmful virus as well as gases such as hydrogen sulfide rise.
In autumn, the fry ought to be moved to ponds that have been cleaned and also disinfected for farming. Transfer all the fry out of the pond for temporary cultivation, and after that disinfect the initial fish pond with 75-100 kg/mu of quicklime, as well as use standard approaches to plump the water quality. After the impact of the medicine vanishes, moving the fry back to the initial fish pond to guarantee the filtration of the reproducing pond.