Hole-in-the-Head Disease
Cause and Symptoms
* The cause of this condition is Hexamita Protozoa , parasitic organisms that are highly contagious.
* These parasites thrive with poor water quality management.
* If your fish has this condition, you will notice the appearance of small pits and pimples mainly on the fish's head. These pits will simply grow and form bigger pits.
* The pits are white in color, and sometimes mucous are visible around them.
* In addition to losing weight, becoming lethargic, and losing their appetites, the fish will produce white, stringy feces.
Treatment
* Add Dimetrydazole (5mg/l) or Metronidazole (7mg/l).
* Repeat treatment once every 3 days.
* Do a 20%-30% water change.
* It is sometimes necessary to inject Metronidazole, but injections near the affected area should be attempt only by qualified personnel.
Preventive measures :
* Change your water regularly.
* Quarantine new fish for three to four weeks.
* Avoid cross-tank contamination.
White Spot Disease
Cause and Symptoms
* The cause of this condition is Ichthyophithirius multifilis (ICH ) , a ciliated protozoan .
* Bad water quality can increase the likelihood that your fish will be victim to this parasite.
* Low water temperatures (< 25°C) are ideal breeding grounds for ICH.
* The most common way Flower horns get ICH is when they are fed live or frozen food that has already been contaminated with the parasite.
* The most prominent symptom of this condition are the pure white spots that will appear all over your fish. You may also notice the fins are clumped together, and they act a bit more lethargic than usual. Moreover, it's common for them to lose interest in food when ICH infects.
Treatment
The parasites resides under the skin of the fish, hence it is not affected by water treatment or direct treatment applied to the fish . Break the breeding cycle of Ich by washing the tank thoroughly to remove the cysts of the parasite. Keep in mind that this is a highly contagious condition, so your entire aquarium must be treated.
To cure white spots:
* Place Kordon Ich inhibitor in your tank.
* Add aquarium salt at 3g/l of water every 3 days together with the medication.
* After 3rd day, tank must be washed thoroughly to eliminate the causative agent.
* Add Kordon Malachite Green treatment to your tank.
Preventive measures:
* Add Kordon Prevent Ich Fish Disease Inhibitor and Preventative to your tank.
* Quarantine new fish for three to four weeks.
* Avoid cross-tank contamination.
Mouth, body and tail fungus
Causes & Symptoms
* This condition is caused by Saproglenia and other related bacteria.
* Bad water quality only causes these kinds of bacteria to thrive.
* Sudden changes in the water condition can also cause this condition in your fish.
* If your fish has this condition, you will notice cotton like tufts at the mouth, body, fin and tail.
* You may also notice your fish losing weight.
Treatment
* Add Aquarium Pharmaceuticals Aquarium Salt to your tank.
* Adding Jungle Labs Fungus Eliminator will also help.
* Be sure to treat the whole tank, but quarantine the most seriously ill fish.
Preventive measures :
* Change your water regularly.
* Quarantine new fish for three to four weeks.
* Avoid cross-tank contamination.
source : http://frogstone-restday.blogspot.com/2009/11/flowerhorn-deseases.html