CATDOLL : CATDOLL: What is the disease of Koi fish rolling in the fish pond?

What is the disease of Koi fish rolling in the fish pond?

It may be fish mullet disease/arrow worm disease. After careful inspection, take the right medicine for the symptoms.\x0d\x0aSymptoms: The fish jumps, rolls, and rubs its body against the pool wall or the bottom, and swims restlessly. \x0d\x0aCarefully observe the fish's body surface, and you can find small round parasites growing on the fish's body surface, or long and thin parasites like thread ends growing between the scales. \x0d\x0aPrevention and control methods: Sprinkle aquatic trichlorfon (20% liquid 2.5cc/t, solid powder 0.5g/t) into the breeding pond for 3 to 5 days, and perform a drug bath. \x0d\x0aSprinkle 1 to 2g/t of dichlorvos into the breeding pond for 1 week to 10 days, and perform a drug bath. At this time, you can use it together with trichlorfon, and there will be no problem. Sprinkling the medicine once will be effective. \x0d\x0aTrichlorfon only drives away the larvae of arrow worms, and has no effect on the eggs and adults of arrow worms. Apply once every 10 days, and repeat three times. \x0d\x0aRemarks: The parasites live on the body and fins, injecting venom and sucking blood. Because the venom secretes spinal fluid, the affected area becomes congested and bleeding, causing perforation or saprolegniasis. If the parasites are infested in large numbers, the fish will be very weak and thin. The parasites can be found with the naked eye.

It may be fish mullet disease/wild arrow worm disease. After careful examination, take symptomatic medication

Symptoms: Fish jump, roll, rub their bodies against the wall or bottom of the pool, and swim in an excessively fidgety manner.

If you observe the fish's body surface carefully, you can find small, round parasites growing on the fish's body surface, or long, thin parasites like thread ends growing between the scales.

Prevention and control methods: Sprinkle trichlorfon for aquaculture (20% liquid 2.5cc/t, solid powder 0.5g/t) into the breeding pond for 3 to 5 days and implement medicated bath.

Sprinkle 1-2g/t of dichlorvos into the breeding pond for 1 week to 10 days, and perform a drug bath. At this time, you can use it together with trichlorfon without any problems. The effect will be seen after one spray.

Trichlorfon only kills the larvae of arrowworms, and has no effect on their eggs and adults. Sprinkle once every 10 days, and repeat three times.

Note: The parasite lives in the body and fins, injecting venom while sucking blood. Because of the venom, the affected area becomes congested and bleeding, causing perforation or saprolegniasis. If the parasite is infested in large numbers, the fish will become very weak and thin. The parasite can be seen with the naked eye.

Generally, koi fish will roll over and become irritable if they have parasites. For example, fish with iodine blister worm disease will swim wildly in the water, circle around, or dive into the water and jump up. Fish with three-generation worm disease will be extremely restless, sometimes swimming wildly in the water, sometimes swimming sharply sideways, as if they are trying to get rid of something. Other parasites such as ringworm disease and fish mullet disease can also make fish very painful.

For iodine blister worm disease, the pond is usually cleaned thoroughly with quicklime, and the fish are washed with potassium permanganate solution. For trichomonas, ringworm disease, and mullet disease, dipperidone is sprayed throughout the pond to kill them. For mullet disease, tweezers are used to pull out the worms.

It is estimated that your old fish is not adapted to the environment. First, stop feeding it. Secondly, add some medicine to treat koi parasites in the fish tank. It is possible that there are some parasites in its body. Oxytetracycline should be used. This can be bought at the Shilihe Flower, Bird, Fish and Insect Market for about 5 yuan. Don't feed it first.

Secondly, I don't know if you have added filtration and oxygen in your tank. These two are also indispensable tools for raising koi, because koi consume a lot of oxygen. So there must be oxygen, and because koi eat a lot, they will have a lot of excrement, so the water quality is easy to deteriorate, so you need to add filtration. If the water quality is good, your beloved koi will not be easy to get sick. Raising fish is to raise water. Haha, if you don't understand, please ask again.

It should be congestion - bacterial infection and cold can cause it. First add some breeding salt into the water and see. If there is no improvement after 24 hours, use norfloxacin at a dosage of 6-8 mg per kilogram of fish mixed with feed, 2 to 3 times a day, and feed for three consecutive days.

Koi fish spinning around in the fish tank

It is possible that you have Ichthyophthirius or fish flea disease, and you can check and treat it according to the following.

1 Ichthyophthirius microtyping disease - also known as white spot disease.

[Pathogen] It belongs to the family Notostomatidae, the genus Ichthyophthirius, and the multi-sperming Ichthyophthirius. This is a type of ciliate with a relatively large body. Its morphology is very different between the larval stage and the adult stage. The larvae of Ichthyophthirius invade the skin and gills of fish, especially the skin. When the larvae infect the host, they drill into the epithelial tissue of the skin or gills, wrap their bodies in small cysts secreted by the host, grow and develop inside the cells, and become adults. The adults break through the cysts and fall into the water. After swimming freely for a period of time, they fall to the bottom of the water body, stop, and secrete a layer of gelatinous cysts. The worms in the cysts reproduce by division, producing hundreds or even thousands of ciliated larvae. The larvae come out and swim freely in the water, looking for hosts. This is the infection period of Ichthyophthirius. The larvae infect a new host and begin their life cycle again.

[Symptoms] It is common for ornamental fish to be infected by Ichthyophthirius spp. In the early stage of infection, white spots are distributed on the chest, back, tail fin and skin of the fish. At this time, the fish will continue to forage and move as usual. After a few days, white spots will be all over the body, and the fish will lose the ability to move. They often appear sluggish, float on the water surface, swim slowly, have a poor appetite, become thin, and have bleeding spots on the skin. Sometimes they swing left and right, and swim sideways quickly next to the aquarium wall, water plants, and sand and gravel to scratch themselves, and gradually lose balance while swimming. The course of the disease is generally 5 to 10 days. The infection speed is very fast. If the treatment is not timely, it can cause a large number of deaths in a short period of time.

The suitable water temperature for Ichthyophthirius spp. is 15-25℃. This disease often occurs in early winter, late spring and rainy season, especially in the absence of light, low temperature and lack of live bait. When the water temperature rises to 28℃, Ichthyophthirius spp. will begin to die.

[Prevention and control methods] Take advantage of the weakness of Ichthyophthirius spp., which cannot tolerate high temperatures, increase the water temperature, and then use drugs for treatment. Usually, the cure rate can reach more than 90%. If the treatment is timely, the cure rate can reach 100%.

The treatment with a mixture of 0.05 ppm malachite green and 25 ppm formaldehyde solution has a better effect. It can also be soaked in 1% salt water for several days, or in 2 ppm methyl blue solution for 6 hours a day; or soaked in 2 ppm quinine hydrochloride solution at 28-30°C for 3-5 days, or soaked in 2 ppm mercurous nitrate solution for 30 minutes; or soaked in 50-70 ppm red mercury solution for 5-15 minutes, or sprayed with 0.1-0.2 ppm mercuric nitrate solution, all of which can achieve good results.

2 Fish lice disease

Fish lice have flat and round bodies, are gray-green in color, slightly transparent, and look like small bedbugs when they are large. If they cannot find a host within 2-3 days, they will die on their own.

[Cause of disease] This disease is mostly caused by the presence of parasites in the caught red worms, which are directly thrown into the fish pond (tank) without being fully rinsed and inspected before feeding, or due to factors such as unclean water quality, spoilage and cross-infection, resulting in fish lice parasites directly invading the fish body.

[Symptoms] Once goldfish are infested by fish lice, they may lose balance and often become restless, swimming rapidly; sometimes rubbing their bodies against the wall of the pond (tank), which may lead to loss of appetite, slow movement, local swelling, bleeding and ulcers, and increased secretions; in severe cases, scales may fall off, and bacteria such as water mold may invade, causing infection and accelerating the fish's weight loss and death.

[Season of onset] It can occur throughout the year, but is more common from April to October.

[Prevention and treatment methods]

(1) Use 0.25-0.5 g of 90% crystal trichlorfon per cubic meter of water (i.e. 1,000 kg), dissolve it and sprinkle it all over the pond, or add 0.5-1 g of 90% crystal trichlorfon to 10 kg of water and bathe the diseased fish for 10-15 minutes. Bath the diseased fish with the drug 3-4 times in a week.

(2) Soak the fish body in 3% salt water for 15 minutes. Take advantage of the fact that fish lice are afraid of salt and drive them away from the goldfish's body. Then put the fish into new water that has been kept for more than three days.

(3) The water used for fish farming needs to be left to stand and exposed to the sun for a few days so that the parasites cannot find a host and die on their own, thus reducing the incidence of disease. This is a relatively effective disease prevention measure.

(4) Rinse the bloodworms. The bloodworms you catch must be carefully checked for parasites or other pests and eggs, and must be rinsed thoroughly before feeding them to goldfish. This is also a positive way to prevent and reduce the occurrence of fish diseases.