How to raise Longfeng fish

Dragon and phoenix belong to koi fish, and their habits are similar to those of koi fish, so they can be raised according to the breeding method of koi fish.

1, feeding:

Koi fish is an omnivorous fish. It is best to feed synthetic granules, bait, bean cake, vegetable cake, bread crumbs, fish worms, clams, crab meat, radish and duckweed.

Take it once or twice a day within 5 to 10 minutes. Feed less in rainy days and not at night. Koi fish needs to consume more oxygen when digesting food. On rainy days and nights, the air pressure is low, so the dissolved oxygen in the water is low. Feeding the fish at this time may lead to severe hypoxia and fish death. This is why most dead fish happen at night. The saturated digestion and absorption of fish hunger can be distinguished according to the color of fish manure: if fish manure is green, brown or black, it means that fish is suitable for feeding and absorbs well. If the fish manure is white, it means that the fish is full.

Precautions:

Food must be clean. Feeding unclean fish food can easily lead to koi fish's illness. Although koi fish likes live food best, fish that eat live food grow faster. However, live food grows in polluted water environment and is easy to be contaminated with germs, so be careful when releasing live food. It is recommended to buy brand frozen fresh food produced by professional companies, supplemented by legumes and vegetables to maintain comprehensive nutrition. Breadform is also koi fish's favorite living food, which has high nutritional value and can be properly fed.

2. Change water:

First of all, koi fish can't change too much water at a time after returning home, otherwise the water quality will suddenly change, which will lead to water quality discomfort in koi fish. Koi fish has adapted to the life in the original water quality. When the water quality changes suddenly, fish will get sick or even die suddenly.

Fish should be stored in fresh water for a day or two. This is called sun drying. On the one hand, it is to remove chlorine from water, on the other hand, it is to make the temperature of new water close to that of old water. If possible, it is best to aerate the water to help dechlorination.

Precautions:

When changing water, be careful not to change the water temperature sharply. Koi fish can survive in a wide temperature range. You can still maintain your life under the ice in winter, and you can live normally on a hot day as long as you are not exposed to the hot sun. However, if the temperature changes sharply, it will lead to illness or death. When buying fish, pay attention to the water temperature of the aquarium and the water temperature of your own aquarium. The deviation should not be too big, generally within 4 degrees is allowed.

Keep the water clean

Koi fish eats too much, consumes too much oxygen and discharges too much waste, which pollutes the water and breeds germs. In order to keep the water clean, filters should be installed, and at the same time, one tenth of the old water should be replaced by removing debris and residual bait from the bottom of the pool every day, especially in summer. It is best to use filtration with aeration design, so that filtration and aeration can be carried out at the same time, which not only purifies the water body but also supplements oxygen.

Do not bring oil into the water. Oil pollution will float on the water surface to isolate the air, so that the oxygen in the water can not be replenished, leading to the death of goldfish due to lack of oxygen. Eating meat or applying hand cream on your hands will bring oil into the water and should be carefully avoided.

4. Prevention and treatment of fish diseases

The common fish diseases in koi fish mainly include water mold, gill rot, enteritis, scaling and so on.

1). Fish with symptoms of water mold (dermatomycosis, white disease) are parasitic with gray cotton-wool hyphae.

Prevention and control methods:

① malachite green is soaked in 0.2 ppm ~ 0.4 ppm.

② Soak in 0.5 ppm formalin;

③ Mix 400-500 ppm of salt and 400-500 ppm of sodium bicarbonate into a mixture, and smear the sick fish in a small pond.

2) The symptoms of gill rot fish are slow movement and black body color and head. In severe cases, the gill filaments rot and the gill cover has a small transparent window.

Prevention and control methods:

① Soak in bleaching powder 1ppm;

② soaking in nitrofurazone 1.5 ppm ~ 2 ppm;

③ 0.3ppm erythromycin immersion; ④ 0.5 ppm ~ 0.7 ppm copper sulfate overflowed.

3) The symptoms of enteritis include black body color, red and swollen anus, swollen abdomen and yellow mucus overflowing from abdominal cavity.

Prevention and control methods:

① Furazolidone was soaked in 0. 1ppm~0.7ppm ~ 0.7ppm and mixed with oxytetracycline for feeding;

② furazolidone 1 g ~ 2 g/ 100 kg orally for 3 days; (3) Mashing a small amount of garlic, mixing with bait and feeding for 3 days.

4) Symptoms of scale disease (scale disease, pine scale disease) The surface of the fish is rough, the scales of the whole body stand up like pine cones, the scales are swollen at the base, and there is exudate inside.

Prevention and control methods:

① Furacillin 1ppm treatment.

② Feed water containing 0.5% salt, stop eating for 2 days, and feed 0.6 g sulfadiazine bait to each tail every day.

③ Soak in 2% saline solution 10 minute. ④ Erythromycin 2.0 ppm ~ 2.5 ppm for 30 minutes ~ 50 minutes.