Culture conditions and periodic culture methods of baby fish

Baby fish is a kind of fish, which is distributed in many parts of our country at present. The doll fish has a special appearance. It has a slender body and four feet. Now many people have begun to raise baby fish, but before breeding, more people must want to have a comprehensive understanding of its breeding technology.

Culture conditions and cycle of baby fish

1. Culture conditions. Outdoor aquaculture ponds specially built in the open air, and indoor aquaculture ponds transformed from various idle facilities. The aquaculture pond only needs to ensure that it is safe and secure against leakage, keep running water or be equipped with an aerator. The size of indoor ponds can range from 1 square meter to dozens of square meters. The aquaculture pond needs to be soaked in water for one month before stocking, so that the pH value is less than 6.4. generally, there is no strong light, only low light or no light can be maintained.

2. Culture cycle. The natural sex ratio of giant salamander is about 1:1. The mode of reproduction belongs to oviposition and in vitro fertilization. August-September is the peak reproductive season. The fertilized eggs hatch into juvenile salamander after 40 days. Generally, they are metamorphosed in 2-3 years and reach sexual maturity in 3-5 years. However, the growth cycle can be greatly shortened under artificial culture conditions.

Culture method of baby fish

1. Water quality regulation. The aquaculture giant salamander should always keep the water quality fresh and pollution-free, the transparency of the water body is high, the dissolved oxygen content is high, and the PH value is between 6.8 and 7.8. In the actual breeding process, it is necessary to remove the residual bait and excreta in time, regulate the water quality with quicklime regularly and keep the pool water flowing for a long time.

2. Temperature and light. Giant salamander has strict requirements on water temperature, beyond its tolerance will cause giant salamander hibernation or summer hibernation, in hot summer and cold winter, cooling or warming measures must be taken to ensure that giant salamander has a suitable water temperature growth environment. In addition, the giant salamander is afraid of light, the farm should take measures to avoid strong sunlight, at night inspection, can not use strong light to shoot.

3. Stocking density. The stocking density of giant salamander culture pond depends on the specification of giant salamander culture and the factors such as water source, water body, bait and so on. In general, in the seedling stage, the range of activity of giant salamander is small, the feeding ability is weak, and the stocking density can be appropriately on the high side, which is convenient for centralized management. In the adult salamander stage, considering that the giant salamander has a large range of activities, strong feeding ability, coupled with mutual aggression, its stocking density should be small. According to our years of culture practice, the stocking density of seedling stage and adult salamander stage are 60,100 and 520 tails / square meter, respectively. When stocking, the specification should be as neat as possible, and the difference between individuals should not be more than 0.5 times.

4. Feeding skills. Feed, natural bait is better, mainly plankton, insects, meat and fish, shellfish and so on. Bait once every morning and evening, before 7:30 in the morning and before 10:30 in the evening. The last remnant of the bait should be cleaned up before feeding. The feeding amount is 5-10% of the body weight. When the water temperature is 16-23 ℃, the feeding amount should be increased, and the times and time can remain the same.

What kind of food does baby fish eat?

Baby fish are ferocious and carnivorous. They feed on aquatic insects, fish, crabs, shrimp, frogs, snakes, soft-shelled turtles, rats, birds and so on. The way of predation is to "wait for the rabbit". The teeth cannot be chewed, but the food is swallowed whole with open mouth and digested slowly in the stomach. Artificial feeding with natural bait is better, mainly plankton, insects, meat and fish, shellfish and so on.

Prevention and treatment of skin rot of baby fish

Each cubic body of water with fish dolls easily 100g or with chlorine dioxide disinfection, or with 0.3g povidone iodine disinfection ketone iodine, change water every day, continuous disinfection for three days, for eating disease salamander, according to the weight of each kilogram of baby fish, oral administration every day "fish dolls are very relaxed 100mg, multi-dimensional 200mg, mineral add 200mg, EM bacteria 50mg, oral administration for 5 days." For the feeding of sick salamander and can not eat sick salamander, can use 5g / liter fish doll is very easy to invade bubble, every day invade 4kuju, soak until the disease is cured, for those with large ulcer area, it is easy to smear with fish doll.

When raising baby fish, we must do a good job in site selection, and then timely regulation of water quality is also very important. Grasp the density when stocking, and choose the food it likes when feeding. We also need to strengthen the prevention and treatment of diseases, and only by doing these well can we ensure the growth of baby fish.