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Types of Carp Disease and Their Treatments


Types of Carp Disease and Their Treatments

Description: carp disease (Cyprinus carpio) ranges from parasitic to viral diseases. Here are the common examples.


Freshwater fish such as carps are vulnerable to several common diseases. Carp disease (Cyprinus carpio) is also common among domesticated fish in the pond. The diseases can be caused by bacteria, virus, mold, or poor maintenance. Here are several diseases you need to be concern about if you plan to spawn common carps.

      1.     Bacterial hemorrhagic disease
Bacterial hemorrhagic disease is common among several species of carps. The culprits are usually Pseudomonas fluorescens or Aeoromonas hydrophila. This disease causes fish to develop bleeding on parts such as the gills, lips, mouth, fin base, and lower jaw. If left untreated, the symptoms can grow into the distended belly, red spots in kidney and liver, and more extended bleeding.

When detected, treat the pond water by adding 2-3 ppm of potassium permanganate, along with 70-80 mg of oxytetracycline per kg of fish’ weight.

      2.     Spring viremia
Spring viremia, also known as carp’s infectious dropsy, is caused by parasites called Piscicola geoimetra and Argulus foliaceus. The symptoms are darker coloration, bleeding on gills and skin, low respiratory rate, and inflamed gill vents. Currently, there is no treatment for this condition, so you need to separate infected fish and eliminate them.

      3.     Saprolegniasis
This is a disease caused by a fungus called Saprolegnia parasitica. This fungus attacks parts such as fins, gills, and head, causing wounds and white fibrous growth. To treat the disease, you can soak the infected fish in malachite green oxalate solution (3 grams per meter cubic of water) for half an hour. If the infected things are the eggs, soak them in a similar solution for an hour.

     4.     Koi Herpes Virus
Koi Herpes Virus (KHV) usually attacks koi, which is the relative of common carp. However, the same virus was known to attack common carps in ponds across Java and Bali starting 2002. This virus attacks water that has a temperature between 15 and 27 degrees Celsius, with an enormous mortality rate (80 to 100 percent). The virus is also contagious; once a pond is affected, it is easy for the surrounding ponds to get attacked.

There is no exact solution for this condition. Once your pond gets attacked, you need to prepare for massive fish extermination and pond rebuilding. The only solution is to improve the fish’ immunity by mixing their foods with chromium yeast.

Other types of carp disease (Cyprinus carpio) are caused by specific causes, such as vitamin deficiency, imbalanced water pH, lack of oxygen, and stressful pond condition (such as from overcrowding). Make sure to keep your ponds in their most ideal conditions.

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