The dorsal fin, caudal fin and gluteal fin of juvenile black dragonfish are partially or completely broken near the bottom of the body after being frightened. Generally, the broken face will not bleed too much. Broken fins will grow themselves. A certain amount of methyl blue can be added to black dragon fish to prevent secondary infection.
Introduction of black dragon
Black dragonfish is also known as double whiskered bone tongue fish, dragon spit bead, silver belt, silver boat, walrus, giant bone tongue fish. The medical diseases of black dragon fish are ptosis, leukoplakia, blindfold and edema. Therefore, we must pay attention to the observation of daily life when raising black dragon fish, so as to find the disease early and treat it in time.
Black dragonfish belongs to freshwater fish. In fact, in the Archaean Carboniferous period 3.5 million years ago, the dragonfish had existed. Later, due to the movement of the earth's crust, the dragonfish was gradually distributed around the world.
Black dragonfish belongs to the family Osteoglossidae of osteoglossiformes, a freshwater fish native to tropical South America. Its scientific name is Osteoglossum bicitrosum. It's not more than 60 cm (2 feet) long. It's an excellent fishing species with delicious meat. The scales are large; the dorsal fin and the gluteal fin are linear, almost connected with the tail fin; the angle of mouth rises above the eye, and the two long antennae extend forward. The female holds the eggs in her mouth until the young fish hatch.
Common diseases of black dragon
Water mold
Secondary infection caused by mould parasitizing on the injured part of fish. Great harm. Aureomycin and erythromycin can be applied to the affected area, and the wound can be soaked in tetracycline solution or 2% salt water for 15 minutes. It can also be used to ferment drugs. Cat head lice disease: when the number of diseases caused by sucking fish blood is small, the parasite can be directly removed by hand and coated with antibiotic ointment. If the fish is young or there are too many parasites, one eighth of potassium permanganate solution can be used to wash the sick fish for one hour, and three times a day when the water temperature is 25-30 ℃. It can also be used as a drug.
Auto cutting
The dorsal fin, caudal fin and gluteal fin of juvenile black dragonfish are partially or completely broken near the bottom of the body after being frightened. Generally, the broken face will not bleed too much. Broken fins will grow themselves. A certain amount of methyl blue can be added to black dragon fish to prevent secondary infection. Scoliosis (10% of the normal dosage): the symptom is that the spine of the fish bends into S shape. It may be due to improper use of drugs, poor water quality, insufficient transportation and quantity or malnutrition. The treatment is almost impossible, and the key lies in prevention: keep the water clean, pay attention to the balance and sufficiency of nutrition, try to prevent other fish diseases and try not to use drugs, put the water lifting motor to increase the movement of fish, and try to make the aquarium as large as possible.
erythroplakia
(printing disease) viral disease, which can be said to be terminal. Try to raise the water temperature to 36 degrees Celsius, and use oral antibiotics in combination with drug Yu's advice to try benamicin.
Overadipose
The reason is that if you eat too much and exercise too little, you will naturally look like a pig. It won't die, but it will reduce life and make it impossible to lay eggs.
Prevention: 1. Stop eating 1-2 days a week. 2. Put in the water motor or choose a few dragon fish to play with the fat fish to increase the amount of exercise.
Apositia
Do not eat all day, lying at the bottom of the tank motionless. There's no problem with the water quality. It's very normal. This is caused by the change of water environment, which makes the fish have a sense of urgency. Change the bait to make the fish adapt slowly.
Dragon beard knot
Poor water quality leads to poor appetite and lack of vitality. Therefore, water can be changed to improve water quality and enhance food.