How to raise tropical fish fry how to grow faster

Fish culture is now a relatively common thing, whether as ornamental fish, or as edible fish, there are a lot of skills in fish culture, if the method is not used properly, it may cause a lot of problems, serious may also lead to the death of fish fry. Let's learn the skills of fish fry culture together.

How to raise tropical fish fry

1. The water temperature of tropical fish is generally 20-30 ℃. Lighting equipment of tropical fish is mainly fluorescent lamp, in addition, there are halogen lamp, mercury lamp and so on. The lighting of a single aquarium can sometimes use underwater color lights, which is a kind of glassy fully enclosed small lamp tube, which can be directly placed underwater and adsorbed on the wall of the glass cylinder, and the lamp tube can emit different colors, such as red, blue, green and white lights. the landscaping effect is better.

2. The baits of tropical fish include fish insects, water worms, ciliates, yellow powder worms, small live fish, pellet feed and so on. There are many species and sizes of tropical fish, so the bait choices of different species of tropical fish are different. Most tropical fish are mainly animal bait, and small species can also be domesticated to pellet feed, while there are few fish dominated by plant bait.

How do fish fry grow faster?

1. Water injection by stages. In order to meet the requirements of activity space, water quality and nutrition of fish fry in different stages, water injection by stages is an effective measure to improve the survival rate and growth rate in the process of fish fry cultivation. The specific method of operation is: the shallow water goes into the pond, that is, the water depth is about 0.6 meters when the fish flowers go into the pond, and then according to the water color and the growth of fish fry, water is injected once every 4-5 days, each time 10-20 cm, and the water depth is finally stable at 1.2-1.5 meters.

2. Daily management. Patrol the pond once every morning and evening, carefully observe the water quality, fry activity and eating, timely fish out sick fish, dead fish, immediately check, if diagnosed fry disease, should take necessary prevention and control measures. In addition, check whether there are loopholes in the dike ridge, whether the drain is in good condition, and pay attention to escape prevention.

3. Divide the pond in time. After about 25 days of cultivation, when the total length of fish fry reaches 2.5 cm to 3.0 cm, fish fry should be screened and sparsely reared in ponds in a planned way, otherwise the survival rate of fry culture will be low.

How to feed fish fry at different stages

1. The first stage: from the 1st to 7th day, the whole length of Yuhua pond was 0.7cm to 1.2cm. It was fed with fresh pig blood. 500g of pig blood was used for every ten thousand heads per day, and water was sprinkled along the edge of the pond. It was fed three times (9 o'clock, 14:00 and 18:00 respectively).

2. The second stage: Yuhua went down to the pond for 8 ~ 14 days, with a total length of 1.2 cm to 2.0 cm. Feeding crushed peanut bran (40mm 60 mesh granules), peanut bran tastes fragrant to attract fish, high nutritional value, but also fertilizer water, 500g per 10,000 tails per day, dry sprinkled throughout the pond, fed twice (once at 10:00 and 17:00 respectively).

3. The third stage: Yuhua went down to the pond for 15 ~ 50 days, with a total length of 2.0 ~ 5.0 cm. The formula feed with more than 32% protein content was crushed into 1020 mesh pellets, and the daily feeding amount was about 8% of the total weight of fish fry, which was fed in two times (once at 10:00 and 17:00 respectively). Adhere to the "four fixed", and adjust the amount of feed according to the actual situation.

Several causes of illness and death of tropical fish

1. The water temperature changes violently. The best temperature for tropical fish to survive is 25 ℃, but the temperature requirements vary among different species, some as high as 30 ℃ or 20 ℃. So on average, 25 ℃ is a generally acceptable temperature. In addition, to avoid sharp changes in water temperature, generally allowed to change the temperature range of 2 degrees.

2. The stocking density is too high. Many people see that the aquarium can put a lot of lovely fish in a fish tank, so they also raise a lot of fish in the fish tank at home. No matter what kind of fish they are, they will die. When raising many different kinds of fish, we must consider the suitable storage space for each kind of fish and reduce the number of fish. No matter what kind, there are many small fish tanks, which is by no means a good thing. The principle of raising tropical fish is very similar to that of goldfish, requiring a wide water surface and keeping a normal proportion with the number raised in order to ensure an adequate supply of oxygen to tropical fish.

3. Disease. There are many causes of tropical fish illness, including transmission from diseased fish bought, white spot disease caused by low temperature, and water quality caused by spoilage of leftover food or decomposition of fish feces.

Tropical fish fry in the culture, we must pay attention to temperature regulation, but also need timely light, feeding to small fish, water earthworms. Fish fry also need to observe its health problems all the time when breeding, and find that the disease needs to be prevented and treated in time.