CATDOLL : CATDOLL: Which month is suitable for stocking fish fry?

1. Which month is suitable for releasing fish fry?

Which fish fry? The fry of bigmouth catfish will be released in February, and the standard fry will be available for sale in March! Channel catfish will be released in late March, and yellow catfish will be released in late April. The release time of various fish fry varies slightly due to different temperatures in different places!

2. Can bighead carp and northern pike be raised together?

This question is easy to answer, no. Anyone with a little experience in aquaculture can tell that fish are mainly produced in the Yangtze River and the basin to its south, and are rare in the north of the Yangtze River; white-spotted pike are mainly produced in high-latitude waters such as the Northeast, Inner Mongolia, and northern Xinjiang. Although both are carnivorous and ferocious fish, there are big differences in their living habits. One is temperature. Fish like high temperatures, while pike tolerate low temperatures. The different temperatures make commercial breeding difficult. Moreover, fish tend to move to the middle and upper layers of the water body, while pike tend to move to the middle and lower layers. Feeding the same type of feed will cause a contradiction in the water layer sinking. Lao Tuankuan: Both are highly oxygen-consuming fish, and are prone to the danger of overturning the pond. In summary, it is not recommended to keep them in the same pond.

I hope the answer is useful to you, please accept or modify it!

―― Pike, also known as water tiger, is a common name for dozens of fish. It belongs to the carp family, has tender meat and few bones, and is a high-end freshwater fish. "Compendium of Materia Medica": Pike weighs 30 to 40 kilograms. It is the most poisonous fish. If you have this in your pond, you should not keep fish. ―― White pike, also known as K-linked rocket, is a freshwater fish of the genus Pike. Juveniles are ornamental fish, and adults can reach 35 kilograms. It moves quickly, is ferocious and greedy, and is a world-famous sport fish. Considering economic benefits, it is better to separate and raise them separately.

chub fish

Northern Pike

3. In which month are soft-shelled turtles released into the wild?

That depends on whether it is an outdoor pond or a greenhouse. Outdoor ponds are usually around May, while greenhouses are like spring all year round.

4. When is the best time to stock eels?

Mid-June to mid-July

5. When is the best season to release eel fry?

The most suitable season to launch!

6. Artificial cultivation of eels [When should the fry be released each year]

1. Scientific stocking Eels are temperature-changing animals. As long as the water temperature is between 10 and 32 degrees Celsius, they can be stocked all year round. Stocked eels are required to be healthy, active in swimming, free of disease and disability, and of any size. Because eels tend to bully the small and the weak, and bite each other for food when food is scarce, the eels raised in the same pond should have basically the same size. Generally, eels weighing more than 100 to 350 grams can be placed in the waiting pond for sale at any time; eels weighing more than 50 grams can be placed in the cultivation pond and can grow to commercial specifications in the same year; eels weighing less than 50 grams can be placed in the seedling pond and can grow to more than 50 grams in the same year, providing large-sized eel species for eel cultivation next year. The stocking density should be flexibly controlled according to the stocking specifications and feeding conditions, and generally 1 to 5 kilograms are stocked per square meter of water surface.

2. Preparation for entering the pond Before the eels enter the pond, a small amount of fermented organic fertilizer can be applied to breed aquatic animals such as chironomid larvae, earthworms, and aquatic insects, or snails or loaches can be placed in the pond and allowed to breed to provide fresh bait for the fish. If conditions permit, black light can be set up in the pond to lure insects into the pond.

3. Feeding After 1-2 days of short-term adaptation, you can feed the fish. The amount of feed is generally 2%-10% of the total weight of the fish. The amount of feed should be increased or decreased according to the water temperature, the quality of the feed, the water quality, etc. Generally, feed once a day. Feed at 4-5 pm or in the evening. You can also gradually advance the feeding time to acclimate it to daytime feeding, feeding once at 8 am and 4-5 pm.

Eels mainly feed on animal baits, and they like to eat fresh baits, such as various insects and their larvae, earthworms, small fish and shrimps, silkworm pupae, maggots, snails, clams, large zooplankton, livestock and poultry viscera and tadpoles. The bait should be fresh and not rotten. In places where animal baits are insufficient, some plant baits, such as bean cakes, bran or corn flour, can be fed. The above plant baits are mixed with minced fish and shrimp meat into a wet ball (which can stay in the water for a long time) and then fed. Larger baits should be chopped or hung in the pond and allowed to be torn and eaten. The shells of hard-shelled baits such as snails, river clams and cockles must be smashed before being put in. The bait should be fed at a fixed point, and each fish pond should have 2-8 feeding points. The suitable water temperature for eels to feed is 15-30℃, and they have the habit of hiding during the day and coming out at night to feed. If the fish pond is covered with plastic film or other warming and insulation measures are adopted in winter to maintain a suitable water temperature, eels can feed and grow all year round, thus greatly shortening the breeding period, reducing costs, and increasing production and benefits. Before feeding, the remaining bait should be removed to avoid affecting the water quality.

4. Adjust the water level and water quality. Since eels can breathe oxygen directly in the air, they need to often stick their heads out of the water. Therefore, the water level in the fresh fish pond should be shallow. The water level should be determined according to the size of the eels. The water level in the seedling pond should be shallow, generally 10-20 cm. The culture pond can be deeper, generally 30-40 cm. The water level in the pool for sale can be shallower. Eels consume a lot of oxygen and like fresh water. Therefore, new water should be poured in frequently. Generally, the water should be changed 1-2 times a month in winter, once a week in spring and autumn, and once every 1-3 days in summer. The amount of water changed each time is 20-50%. Micro-flow water can be formed in the eel pond where conditions permit. In the hot season, the number of water changes should be increased, or loofahs and grapes should be planted on the pond to prevent exposure to the sun and cool down to prevent heatstroke. In larger and deeper eel ponds, a small amount of omnivorous fish such as tilapia, carp, crucian carp, loach, etc. can be raised together to help remove leftover bait and feces and purify water quality.

5. Timely screening and pond division. Eels are highly competitive. Fish of the same size in the pond will have different sizes after a period of breeding. In the long run, this is not conducive to increasing production. Therefore, during the growth period of eels, all eels in the pond should be caught every month or so, and after screening, large, medium and small eels should be separated and raised in separate ponds. Before the end of the growth period in autumn, all fish should be caught, and fish that have reached commercial specifications should be placed in the waiting pond. The rest of the fish of different sizes should be released in separate ponds according to the production needs of the next year. In this way, after a winter of adaptation, the eels can enter the vigorous growth stage earlier next year.

6. Prevention and treatment of fish diseases Before stocking, the eel pond must be cleaned and disinfected with quicklime or bleaching powder. Foreign eels must be disinfected with a bleaching powder solution with a concentration of 1 part per million, or 3% salt water for 10-20 minutes before being put into the pond. During the breeding period, the entire pond should be sprinkled with bleaching powder at a concentration of 1 part per million every month. Washing the scalped toad in the pond has a certain effect on white spot disease and skin rot.

7. Do a good job of protection. The eel pond is small and shallow. When pouring new water, prevent the water from overflowing and fish escaping. The water surface of the fish pond should be controlled below 20 cm from the edge of the pond. Check the firmness of the fish intercepting nets and the pond walls at any time. Especially when there is a lack of food, thunderstorms, long rainy weather or water quality deterioration, eels are most likely to escape. At this time, more attention should be paid to escape prevention. In addition, ducks, rats, cats and other predators should be prevented from harming eels.

8. Wintering Management Generally after November, when the water temperature drops below 15℃, eels begin to drill deep into the soil and enter hibernation until February-March of the following year. During the winter, warming and heat preservation measures should be taken in the waiting pool. Eels that do not meet the commercial specifications of the year can overwinter in the original pool, and a higher water level can be maintained during the winter. Especially when the water surface is frozen, the water depth under the ice should be kept at more than 0.3 meters, and the pool water should be changed once a month. Dry wintering can also be adopted, that is, when the water temperature drops below 10℃, drain the pool water, cover the bottom of the pool with some wheat straw or rice straw, keep the soil moist and not frozen, and the eels can safely overwinter. In places with heat sources, keep the pool water at 25-30℃ all year round, and the eels can avoid hibernation and grow all year round.