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Can freshwater bass be cultured in Yueyang?

Yueyang can breed freshwater bass, freshwater bass breeding technology.

1. Pond conditions The adult fish breeding pond area should not be too large, preferably 1 to 5 acres, with sandy loam soil and less silt. The bottom of the pond is flat, slightly tilted toward the drainage outlet, the water depth is 1.54 meters, and the drainage and irrigation system is complete.

The water source is sufficient, fresh, pollution-free, and the water quality is good.

The pond is dried and exposed to the sun. About 10 centimeters of water is released 10 to 15 days before stocking. 80 to 100 kilograms of quicklime per acre is used. An additional 5 kilograms of bleaching powder is added the next day. The water is poured into the entire pond to clean and disinfect the pond.

2. Seed stocking: After desalination treatment, the juvenile fish are cultivated to an adult length of about 10 centimeters, and then put into ponds for adult fish culture, with a high survival rate.

The stocking specifications should be neat to avoid cannibalism. The stocking density should be 1,000-1,500 fish per mu. At the same time, 40 large-sized bighead carp fingerlings, 20 silver carp fingerlings and 200 Pengze crucian carp should be cultured to make full use of the water body.

, regulate water quality and increase production.

3. Feeding with bait: Perch is highly predatory and can be fed with surimi or fresh small fish or wild fish meat. After acclimatization, it can be fed with compound pellet feed.

Before feeding, pour a few splashes of water to form a conditioned reflex, and then feed pellets. After several times of conditioning, the perch will swim in groups to feed as soon as they hear the sound of splashing water.

Choose a central place, use a bamboo or wooden springboard to extend into the water surface of the pool, 6-7 meters away from the pool bank, and set up a baiting point. Such a baiting point has a large area for bait delivery and removal, makes it difficult for fish to mix the water when feeding, and can accommodate

More fish eat evenly.

In the early stage, when the fish body is small, the daily feeding amount can be 8%-15% of the fish body weight, 3-5 times a day. In the later stage, as the fish body grows, the daily feeding amount can be 3%-5% of the fish body weight.

, 2 times a day, and the amount of bait should be adjusted in time according to the fish’s feeding and growth conditions.

According to the habit of sea bass not liking strong light, it eats vigorously at sunrise and sunset and almost no food at noon, so attention should be paid to feeding twice in the morning and evening.

When casting, the principle of "slow, fast, slow" should be grasped. Cast less at the beginning, lure the fish to gather before casting quickly, and expand the baiting area in time to make the fish evenly fed, and wait for the fish to be full before grabbing the food.

After it becomes less intense, feed less and keep feeding until most fish leave the feeding point.

Generally, each feeding time is about 30 minutes to prevent the bait from sinking to the bottom, wasting and polluting the water body.

4. Water quality adjustment: Perch is a benthic fish and likes to live in clean water with high dissolved oxygen content (4-6 mg/L) and a transparency of 30-40 cm.

During the color breeding process, new water should be added flexibly and timely according to the water color and transparency.

In the early stage, because the fish are small, the temperature is low, and the water quality is easy to control, the water adding and water changing cycles can be longer. As the fish grow and the biomass of the fish pond increases, the pond should be patrolled frequently, new water should be injected frequently, and oxygenation should be used rationally.

Machine oxygenation. The temperature is suitable from September to October, which is the rapid fattening stage of sea bass. Water quality adjustment cannot be ignored.

5. Catching perch is very easy to catch. More than 90% of the adult fish can be caught by the perch cultured in the pond after 1 or 2 pulls of the net.

However, two points should be noted: First, feeding should be stopped for 1 day before pulling the net for fishing, because the stomach capacity of a full fish is large, and it is easy to cause injury after being collided by other fish; second, the jealous nature of the fish is fierce, and when pulling the net,

Due to fright, it is easy to cause bruises and mutual stabbings. Therefore, when pulling the net, try to choose a net with a smaller mesh size to catch fish, take fish according to the amount, and try not to pull the net from the entire pond.

When raising the net, make sure that the net does not leave the water, and fish are collected in sections in the net without leaving the water. This can reduce damage to unsold commercial fish or caught commercial fish.

Ponds that are pulled through nets should be disinfected once to prevent saprolegnia.