How to Achieve High Yield When Stocking Fish Fry in Ponds After the Start of Spring? Farmers Should Remember These 6 Points

After the Start of Spring, many farming activities need to begin preparation. Under the impact of the epidemic, there may be delays, but everything that needs to be prepared should start being prepared. So what are the high-yield methods for stocking fish fry in ponds after the Start of Spring? Farmers should remember these 6 points!

1. High-Yield Pond Stocking Methods: Emptying the Pond and Pond-Clearing Drugs

Wild trash fish, tadpoles, frog eggs, water centipedes and other harmful organisms that may exist in the pond should be removed with fine-mesh nets. In addition, fully dissolve any remaining pond-clearing drugs accumulated at the bottom of the pond to prevent poisoning the fry.

2. High-Yield Pond Stocking Methods: Ensure Sufficient Dissolved Oxygen in the Water

When stocking fry, pay attention to the weather forecast for the three days after stocking, and avoid bad weather such as strong winds, temperature drops, overcast rain, and thunderstorms. Improper stocking time can easily cause deaths, or slow growth in the future. Generally, when stocking fish fingerlings, it should be done on a sunny morning between 9 and 10 a.m., otherwise it can easily cause stress and death of the fry.

3. High-Yield Pond Stocking Methods: Water Temperature of the Transport Bag and Pond Water Temperature

The temperature difference between the water in the transport bag and the pond water should not exceed 2°C. If the temperature difference between the pond and the fry bag is too large, gradually adjust the temperature difference first, and only put the fry into the pond after they have fully adapted. For fry transported in plastic bags, before putting them into the pond, slowly open the plastic bag and place it into a pre-arranged net cage, and after 30 minutes slowly pour the fry and water together into the cage. If the fry are lying on their backs after opening the bag, it can be judged as carbon dioxide poisoning; simply place them in clean water for a period of time, and after acclimation they will return to normal.

4. High-Yield Pond Stocking Methods: Choosing the Release Location for Fry in the Pond

Relevant experiments show that when newly hatched fry are poured directly into the water from a height of 30 cm, the mortality rate is 5-10%; from a height of 60 cm above the water surface, the mortality rate is 20-30%. Therefore, when putting fry into the pond, they must be kept close to the water surface and released slowly and gently. After releasing the fry, do not rush to leave; observe carefully, and only leave after the fry have swum into the pond and dispersed. If the fry gather in dense clusters, sprinkle water droplets gently to make them disperse throughout the pond.

5. High-Yield Pond Stocking Methods: Fry Should Be Well Fed Before Entering the Pond

Fish fry breeding practice has proven that before fry enter the pond, they should be fed once with egg yolk or feed yeast. If rotifers can be collected and fed, it would be even better, and both the survival rate and growth speed will increase significantly. After the fry arrive, they can first be fed in a net cage, then recounted and put into the pond.

6. High-Yield Pond Stocking Methods: Do Not Feed Bait on the Day of Stocking

Within 30 days after stocking, feeding should ensure many meals with small amounts, and the feed should be spread as evenly as possible along the entire edge of the pond to ensure the fry have enough feed and eat evenly; at the same time, pay attention to fine-tuning the water quality and preventing diseases and pests. Under normal circumstances, about 20 days after stocking, the survival of the fry will tend to stabilize.

As long as the preparation work and later management of the pond are done well, the survival rate of the fry and the economic benefits will both increase greatly.