Koi Diseases How to diagnose and treat common koi fish diseasesKoi fish are very hardy, robust fish and don’t often once become sick once they have settled into the koi pond.koi disease occurs in ponds as fish fall prey to parasitic, bacterial or fungal attacks.The causes of koi fish diseases varied and can range from a sudden drop in water temperature, predator attacks and spawning to name a few.No matter what the cause of the koi diseases, one thing remains constant – the sooner you recognize and begin to treat the problem …the more likely you will be successful treating the koi diseases.Regular pond maintenance and water-quality checks help keep diseases away from fish, but illnesses still occur, even in the best-kept ponds.The first sign of a problem may be a fish floating at the surface, by which time it is probably too late for effective treatment.For this reason, it is vital to set up a routine for examining fish; feeding time provides an ideal opportunity to check their appearance and behavior.So how do you know if you have a sick koi fish? Sometimes the signs that a fish is sick are very subtle, such as one fish segregating itself away from other fish, or not eating very much.As time passes and the koi disease gets worse, the symptoms become more obvious and may spread to other fish.
Small white spots appear all over the body. They increase gradually and the body seems to be covered with the white powder.
The extreme case is that the outer layer of the skin comes off and the diseased koi grows weak to death.
Its germ is Ichthyophthirus, about 0.7 millimeter long, egg-shaped. Treatment for the disease is a medicated bath of franese for seven days.
About one-month-old fry are apt to be affected. by Myxospridea just after they begin to be fed artificial bait.
A gill opens wide and shows red swollen gill filaments. The diseased fish breathes agonizingly and dies.
The disease spreads rapidly and many fries die. It the disease heals, the jaws of the affected koi will be deformed.
Koi older than two years old are not affected by it because they are immune against it.
The cause is Myxospridea. No medicine is efficacious against it.
malachite green early June and minced fresh meat of aan immunized
For prevention the water of the pond is to be disinfected with
koi aginst Myxopridea is to be given to the koi in the pond. It will be carried on for a week.
This treatment is effective enve after a koi becomes ill. The blood of teh minced koi prevents Mixospridea from growning.
Abrasion, Aquatic mold, Aquatic germ, Coton coverThe germs have many mycelia of which bottom parts stay inside the skin of a diseased koi fish.The upper parts live in the water. They look like fur. The extreme case is that they enter deep inside, and the fish grows weak and dies after two to seven days.The disease often breaks out in a pond where too many fish are put or the water is dirty.Weak or wounded koi are easily affected by the disease. Its germs are Sapro legniasis and Achlyasis.Treatment for the disease is to wash and remove the germs in 1.5 to 2.5 NaCl solution.Remove the fur-like mycelia and apply 2% mercurochrome to the affected part.Then put the koi fish in a medicated bath of monafuracin for fish. A medicated bath ofNitrofurazone is also efficacious
How do you treat fungus on fish?
Treat for 5 consecutive days. Repeat until symptoms clear.Secondary infections are also common and can be treated with antibiotics or general cures like Tetra Ick® Guard® or Tetra® Fungus Guard®.Consistent temperature and good water quality will help prevent infections, in addition to using aquarium salt. learn more at http://www.tetra-fish.comCan salt cure fish fungus?This is the reason that body fungus infections are not seen on saltwater fish.Adding 1 tablespoon of noniodized rock salt to each gallon of water is helpful in effecting a cure. …Salt will kill aquarium plants and snails, but this should not be a problem if you are treating the infected fish in a separate container.What keeps fungus from growing on fish’s body?Prevention. You can easily prevent body fungus. The fungi that cause this disease are considered “opportunistic” infections.This means that the fungi lives in most aquarium water, and even on the skin of most aquarium fish, without causing disease.Is fungus on fish contagious?Because fungus is not contagious, infected fish can be moved to a quarantine tank for treatment away from other livestock.This is the recommended approach for systems where some of the livestock are intolerant of antifungal medications.What causes fungus on fish?The infection is usually caused by the fungus Branchiomyces and can cause the entire gill to rot away.Infections usually occur in stressed fish that are living in tanks with high levels of ammonia or nitrate.How do you treat fish fungus in a pond?Make an un-iodized salt dip by using Pond Salt (available at your local pond retailer).Dissolve 2.5 cupfuls of Pond Salt in 10 U.S. gallons of pond water making a 2.0% solution.Gently place fish in a soft nylon net, then lower them into the salt dip for 5 to 10 minutes, no longer.Fish lice disease A koi with fish lice swims as if it were jumping in water, scrubs itself against rocks or swims along the walls of the pond.Being examined closely, it has worms about 5 millimeters long and 3 millimeters wide often on fins.They make the fish weak and causes some other diseases of which it dies.The technical term of a fish louse is Argulus foliaccus. It can be exterminated by DipterexBladder diseaseA koi with this disease struggles to go up to the surface, sinks down to the bottom or turns itself upside down.It loses the sense of equilibrium and cannot swim in a normal position.The causes are that swelled intestines press the air bladder because of indigestion, that indigestion makes the body weak as the temperature falls and that fatty degeneration of an air bladder.It is difficult to cure it. Tumor of reproductive organsHuge koi are apt to be affected by the disease.The diseased koi has a large tumor in its abdomen which gradually gets larger and affects the skin Finally the tumor breaks and the fish dies.Especially the tumor in the first half of the body seems to be malignant.It is a malignant tumor of the genital gland. Particles like cancer virus are found in it.The tumor should be found and removed in its early stage. Examination of the texture is necessary as soon as it is found.Spinal paralysisAgricultural chemicals such as Dipterex, over-feeding or electric shocks from the submersible pump motor or lighting cause koi spinal paralysis.They become crooked. It is difficult to cure it, but sometimes it heals naturally.Keeping the diseased fish in a large pond is an effective treatment. Gas bubble diseaseIt occurs when the water temperature is high in the summer. Fry often suffer from it in green water.Gas bubbles appear on the head or the fins and sometimes eyes protrude, supersaturation of oxygen in water causes the disease.It can be prevented by adding water to the pond or making a shade over it.When aeration or heating is working in a tank, they must be well-controlled not to cause the disease. Dystrophy of the backThe back of a diseased koi caves in along the dorsal fin. The line of the backbone shows itself clearly.Its mortality rate is not high. Koi affected by the disease are weak against oxygen shortage or wintering.They are apt to get scraped or molded. The cause is said to be degenerate fat of pupae.A report tells the disease resembles men’s sugar diabetes pathologically.Vitamin E drugs are used for its treatment but it is very difficult to cure it.