Koi are lying at the bottom of the tank, red nematode-parasite-koi disease and prevention-brocade carp-view

Red nematode, also known as uterine nematode, is called red nematode because of its slender body and bright red color, and the disease caused by red nematode is called red nematode disease. Red nematode can be divided into two kinds: carp red nematode and crucian carp red nematode. The following mainly introduces the characteristics of carp red nematode disease:

Carp red nematode mainly harms carp. Female worms generally curl and parasitize under the scales of carp, making the scales bulge.

This worm often wriggles under the scales of the fish, destroys the skin of the fish, absorbs the nutrients of the fish, and causes skin inflammation and congestion and bleeding. Water mildew is often parasitic in inflamed skin, causing secondary infection. In serious cases, it may cause the muscle of koi to rot, resulting in the death of diseased fish. The disease mainly harms carp over 2 years old and spawning parent fish, and the epidemic season is generally spring.

The infection of red nematode disease is due to the infection after the brocade carp swallowed the water flea with larvae. After a period of development in the body cavity, the female migrates to the parasitic site and matures after mating between the female and the male.

Red nematode disease usually occurs in May or June. Generally, it will not cause the death of diseased fish, but it can cause bacterial and fungal infection. It can also cause death in severe cases.

In the parasitic part of the worm, the tissue is congested, inflamed, ulcerated and even necrotic. And the red worm body curvature can be seen in the focus. There are large insect bodies in the eye socket of diseased fish, which can be seen clearly.

Treatment:

(1) clear the pond with quicklime to kill the larvae. Do not use tea cake, because tea cake not only can not kill larvae, but also can prolong its life.

(2) washing the fish with 2% Mel 2.5% salt water for 15-20 minutes is the most simple and effective method.

(3) wipe the focus with 1% potassium permanganate or iodine, and only pay attention to prevent the liquid from flowing into the fish gills.

(4) per cubic meter of water, 0.2-0.5 grams of crystal trichlorfon (90%) was sprinkled all over the pond to kill the intermediate host.

For more questions about koi, please consult the Koi Forum.

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