Fish body ulcer how to prevent and cure fish lice disease in winter

Fish lice disease is an invasive fish disease caused by fish lice attached to the body surface of fish. Fish lice disease is easily prevalent in low temperature season, resulting in thin fish body. Fish lice can crawl freely on the surface of the fish, forming many wounds, resulting in ulcers and secondary bacterial diseases.

Fish culture

Pathogen: fish lice, shaped like bedbugs, transparent and bluish white, parasitic in all parts of the fish body, more parasitic under the abdomen and fins and tail. When fish lice are parasitic, they stab the fish's body surface tissue with mouth thorns to absorb blood and body fluids. When fish lice are parasitic on fish, they change with the change of fish color, so it is not easy to find.

Symptoms: it can be seen with the naked eye that the oblate worm crawls or bites on the fish, the fish is extremely restless, leaps out of the water, swims violently, and some sick fish rub against the pool wall, roll over, etc., seriously sick fish, gradually lose weight and die.

Control: (1) disinfect fish ponds with quicklime or tea bran to kill adults, larvae and eggs of fish lice.

(2) when individual fish find a small amount of fish lice, they can be clipped with tweezers and the bleeding area of the fish can be disinfected with purple solution.

(3) when stocking fish fry, soak and disinfect them with 3% sodium chloride (salt) solution for 5 minutes (20 ℃).

(4) where there are a large number of fish lice in the fish pond, remove all the diseased fish, put them in 0.1-0.15% crystal trichlorfon solution and wash them for 2-5 minutes, then put the fish into the pond that has been sterilized and changed water, and will soon return to normal.

(5) for the prevention and control of Chinese herbal medicine, 15kg camphor leaves per mu of water are mashed, dregs and juice are sprinkled in the whole pond, or 15kg Masson pine needles per mu are mashed and leached and sprinkled in the whole pond for about 3 days to make fish lice fall off; or 20kg fresh needled pine branches per mu can be tied into bundles into fish ponds for about 5 days to make fish http://www.lssp.com/search?q=%E9%B1%BC fall off.