| 8. Freshwater Disease Treatment |
| The most common diseases, the fish they affect and recommended treatments are outlined below. It is important to note that more than one medication is listed for each type of problem. If positive results are not seen within the course of the full treatment of one medication, then an alternate medication should be used. |
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When using any medication, follow all instructions carefully. Diagnosis is made by your best guess and treatment will not always be successful. Responsible attempts should be made, however, to save fish. Heroic attempts should be made to prevent disease.
Be observant. An awareness of healthy behavior and appearance will tip you off much sooner when problems are brewing. Observe fish carefully during treatment. What you learn from one treatment may help you during the next outbreak. |
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| Observations |
Possible
Conditions |
Causative Agent |
Fish Most Often Affected |
Treatment |
| Gross lesions, open sores,gill hemorrhage, high unexplained loss |
Overcrowded tank, low oxygen levels, new fish |
Furunculosis,
Pseudomonas, Salmonidica |
Goldfish
Spiny Eels |
Kanamycin,
Gel-Tek, Tetracycline with Neomycin, Furazone Green (goldfish) |
|
| High fish losses, no open sores, blood in fins or gills |
Overcrowding, low oxygen, change in temp, high nitrite |
Aeromonas septicemia, Aeromonas hydrophila |
Goldfish,Gouramis
& Cichlids |
Kanamycin, Neomycin, Nitrofurazone with Methylene Blue in quarantine
Gel-Tek |
|
| Red fins, sandpaper-like abrasions on sides of fish, fin deterioration |
New fish, overcrowded conditions |
Bacterial hemorrhagic septicemia, Pseudomonas septicemia |
Anabantids, Gouramis, Bettas |
Nitrofurazone, Simply Betta,
Gel-Tek, Furazone JR, Kanamycin, Salt as conditioner, Aquarisol |
|
| Gray to white lesions on mouth & caudal area, fin deterioration, fish lie on bottom |
Poor filtration, new fish, lack of minerals |
Columnaris, Flexibacter |
Guppies & other
live-bearers, dojo catfish |
Kanamycin, Nitrofurazone, VitaChem
Gel-Tek |
|
| Lumps on body, whirling, spinning, discoloring - black pigment on fish |
Overcrowding, new fish, overfeeding |
Myxobacterium |
Goldfish, Tetras |
LifeBearer with
Furazone Green as follow up, Metronidazole, Gel-Tek |
|
| Distended or frayed gills |
Overcrowding, low oxygen |
Bacterial gill disease unless larger parasites or scratching are seen |
All fish |
Kanamycin, Neomycin, Aquarisol, Gel-Tek |
|
| Bulging eyes, swollen posterior area |
Overcrowding, poor filtration, overfeeding |
Bacterial Kidney Disease, Corneybacterium |
All fish |
Erythromycin, Ampicillin, Penicillin, water change with AquaLife Complete |
|
| Unexplained fish losses, no outward signs or symptoms |
Newly arrived fish |
Hexamitosis, Octomitus |
All fish |
Metronidazole,
Nalidixic Acid |
|
| White filmy growths, fin deterioration |
Newly arrived fish, poor water quality, drop in temperature |
Bacterial hemorrhagic septicemia |
Bettas and other Anabantids, & Goldfish |
Simply Betta, Betta Spa |
|
| Grayish threadlike particles hanging from fish, inflamed gills, small red sores |
Temperature change, warmer weather, new fish |
Anchorworms,
Lernea, Fish Lice |
Goldfish & Livebearers |
Clout, LifeBearer, F.L.A.W, Gel-Tek |
|
| Flat clear disc shaped attachments on fish, inflamed gills, small red sores |
Temperature change, warmer weather, new fish |
Fish Lice, Argulus, ectoparasites |
Goldfish & Livebearers |
LifeBearer, F.L.A.W, Gel-Tek |
|
| Black areas on fins and scales of fish |
Poor filtration, overfeeding |
Myxobacterium, Myxobacteriosis |
Goldfish & African Cichlids |
LifeBearer, Nitrofurazone as follow up medication |
|
| Scales protruding, giving the effect of bloating |
Poor water quality |
Viral dropsy, viral septicemia |
All fish, especially Goldfish |
Kanamycin |
|
| Tiny white spots on fish's body |
Drop in temperature, high ammonia, high nitrite |
Ich |
All fish |
Quick Cure, Formalin, Ick Guard II or Quinine for scaleless fish |
|
| Fuzzy white growths like tufts of cotton |
Drop in temperature, overfeeding, fish has wounds |
Fungus, Saprolegnia |
All fish |
Triple Sulfa, Disease Dip, Rally, Gel-Tek |
|
| Gray slime or fog on fish, clamped fins, body shimmy |
Drop in temperature, overcrowding, poor filtration |
Chilonodella protozoan infestation |
All fish |
Quick Cure, Ick Guard II, Formalin or Quinine for scaleless fish, Gel-Tek |
|
| Fish stop eating, clamped fins, lumps on body, darkening of fish, fin deterioration |
Overcrowding, low oxygen, pH shock, new fish |
Ich |
Angel fish, Oscars, Discus and some wild caught fish |
Metronidazole, Gel-Tek |
|
| Bulging eyes, scars or holes in head area |
Poor water quality and poor nutrition |
Hexamita |
Discus, Angels, Cichlids, Some species of catfish |
Metronidazole, VitaChem FW vitamin supplement, Discus Essential for Discus,
Gel-Tek |
|
| Abdominal swelling |
Poor water quality |
Internal bacterial infection |
Goldfish, African Cichlids |
Gel-Tek |
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| Body emaciation, fish eat but loss of weight |
Newly arrived fish, live food being fed, live snails present in tank |
Internal worms, round worms, tapeworms |
All fish |
Metronidazole |
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| Scratching gills, gills distended or red, rapid breathing |
Newly arrived fish, live food being fed, live snails present in tank |
Gill Flukes, Dactylagyrus, Gyrodactylus |
All fish |
F.L.A.W, , Quick-Cure, , LifeBearer |
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| Cuts or wound on fish not caused by parasites |
Scraping, aggressive fish in tank |
Wounds, cuts or abrasions |
All fish |
Disease Dip, Nitrofurazone, Hydroplex |
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| Low grade infection on fins, deteriorating fins |
Overcrowding, newly arrived fish |
Mild bacterial or fungal infection |
Goldfish |
Jungle Aquarium Salt, Furazone Green |
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We cannot be responsible for fish loss due to treatments outlined on this site.
We encourage you to buy healthy livestock from reputable dealers, observe fish carefully at regular intervals and test your water frequently for problems.
Prevention is always your first line of defense against disease.
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