CATDOLL : CATDOLL: I have a 2 mu fish pond with a depth of 1.5 meters and sufficient water. How can I breed grass carp and crucian carp at a high density? How can I mix other fish?

1. I have a 2 mu fish pond with a depth of 1.5 meters and sufficient water. How can I breed grass carp and crucian carp at a high density and how can I mix other fish?

The water is a bit shallow, so high-density breeding requires an aerator. Per acre, there are 600 grass carps weighing half a catty, 200 crucian carps, and 150-200 bighead carps.

There are friends who are raising fish on "Haoyuzhiwang". You can go and have a look. Let's exchange ideas and get rich together. The water is a bit shallow. High-density breeding requires an aerator. 600 grass carps, 200 crucian carps, and 150-200 bighead carps are allowed per mu.

2. Crucian carp breeding density

Generally speaking, for the cultivation of crucian carp fingerlings, 8,000 to 12,000 fish should be stocked per acre of land, and the final size can be grown to 50 to 60g per fish.

For the breeding of adult fish, based on the calculation of 50-60g/tail adult fish, the stocking density per mu should be 1500-1800 fish, and the final size should be about 350-400g/tail. Of course, the stocking density also depends on the area of ​​the pond, management conditions, etc. Generally, it is required not to exceed 2000 fish/mu.

Feed particle size and feeding rate

1. The selection standard of crucian carp feed particle size is "small rather than large". Generally, when the crucian carp size is less than 10 grams per tail, the feed particle size is 0.5mm; when it is 10-30 grams per tail, it is 1.5mm; when it is 75-100 grams per tail, it is 2.0mm; when it is 150-300 grams per tail, it is 2.4mm; when it is more than 300 grams per tail, it is 3.2mm.

2. The feeding capacity of fish is easily affected by the size of fish and the water temperature of pond, so the feeding rate should be adjusted randomly according to the actual situation.

3. How to fish crucian carp floating? There are three main situations

1. Insufficient dissolved oxygen in the bottom. This happens in the hot summer, because the air pressure is low and the oxygen content at the bottom of the water will decrease. The carp's tendency to move to the upper layer will make it swim to the upper layer, because the oxygen content there is higher and the carp is more comfortable. On rainy days, you will find fish breathing with their mouths open, because of the lack of oxygen at the bottom of the water. Because the dissolved oxygen content there is relatively high, the carp is more comfortable. Before the rain in summer, we will also see fish breathing with their mouths open on the water surface, all because of the lack of oxygen at the bottom of the water.

In addition to the weather, there is another situation that can cause insufficient dissolved oxygen at the bottom. This situation often occurs in black pits and other environments. That is because too much bait is fed, causing the silt at the bottom of the water or the bait is too thick to ferment. At this time, the oxygen at the bottom of the water will be seriously consumed, and crucian carp will not like to go to the bottom! In this case, if we continue to fish at the bottom, it will definitely not work, but if we change to floating fishing, because the fish themselves are very uncomfortable, it is actually difficult to guarantee the catch.

2. Fish’s tendency to drift upward. This floating phenomenon often occurs when fishing in spring. After the beginning of spring, everything comes back to life and the water temperature gradually rises, especially during the day. Because of the warm sunlight, the water temperature in the upper layer rises quickly, and the crucian carp hiding at the bottom will quickly move to the shallow water area or the upper layer of the water. At this time, if the bottom fishing is not good, you can switch to floating fishing, and you will generally get a good catch!

3. Artificially caused floating and leaving the bottom. This type of situation is only used by a few fishing experts, and is often used in black pits and fishing competitions. Because the fish density in black pits is high, in order to increase the fish catching rate, the fish will be intentionally introduced to the upper layer, and the fish will be scrambled for food to increase the fish catching rate and quantity. This situation is generally made with highly atomized scattered bait. When the bait enters the water, an atomized belt will be formed. After the bait falls to the bottom of the water, the high-density fish will leave the bottom of the water to chase the bait, and the fish that forage at the bottom of the water will change to chasing upwards for food.

4. How many kilograms of crucian carp and silver carp can be produced in a year by raising crucian carp and silver carp in a 20-mu dam pond?

According to the multi-batch rotation mode throughout the year, the output of crucian carp per acre can reach 5,000 catties or the output of silver carp can reach more than 3,000 catties.

The feeding mode of bighead carp in the feeding table can be applied to the high-density mixed farming mode of grass carp and bighead carp, the high-density farming mode of bighead carp in reservoirs, the high-density mixed farming mode of crucian carp and bighead carp, as well as the conventional bighead carp combination farming mode. For bighead farming varieties, the shrunken bighead carp with higher economic value can be selected, and the benefits will be better.