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Gill Disorders
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Symptoms
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Cause
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Treatment and Links
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A). The gill filaments are light,
having lost color |
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Has the pH changed?
Is chlorine in the water?
Is ammonia in the water? |
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Establish optimum water values. Check pH,
and Chlorine. Use
Aqua Gold. |
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The fish can be affected by a Kidney Disease |
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Treat fish with
TMP Sulfa -or-
Erythromycin. |
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B). Small white objects (1 to 1.5mm)
are attached to the gill filaments. They hold very tightly |
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Gill Crustaceans |
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Treat the fish with
De-Los and
Methylene Blue. |
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C). Blood-red worms are visible on
the inside surface of the operculum (gill plate), but usually
only in pond fish |
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The fish are affected with blood worms
(Philometra spp) |
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Treat the fish with
De-Los |
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D). Light flecks appear on the
gills. The gill filaments are necrotic at this spot |
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Eggs of the blood fluke Sanguinicola spp are
involved. If fungal hyphae are seen in the slides, then
gill rot is involved |
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Treat with a bath in
Acriflavine Neutral. |
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E). Are the gills flecked with
grey-white. Do the filaments keep falling out? |
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Branchiomyces fungal gill rot |
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Treat with
Forma-Green |
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F). Cotton-like threads grow on the
operculum (gill plate) or gill filaments |
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Saproglenia fungal infection |
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Treat with:
Forma-Green -or-
Acriflavine Neutral. |
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G). Breathing is rapid, one or both
opercula (gill plates) are open, and the fish rubs itself around
the gills. The fish hangs below the surface and gulps for
air |
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The fish is affected with gill worms or gull
flukes |
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Treat with: Praziquantel
for marine fish or
De-Los for freshwater fish |
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H). The gill filaments appear
slightly cloudy, even whitish on the surfaces |
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Your fish are affected by a Protozoan Infection |
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Treat with:
Metronidazole and
Methylene Blue. |
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I). White dots appear on the gill
filaments. The dots measure 0.5mm in freshwater fish and
to 1mm in marine fish |
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An Ichthyophthirius or Cryptocaryon disease is
beginning to spread |
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Treat with:
Forma-Green -or-
Copper Sulfate. If marine cryptocaryon is resistant to
the above treatments, use Quinine Sulfate |
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J). Small, white modules appear on
the gill filaments and cannot be removed |
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Most likely, sporozoan cysts |
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No suitable treatment known. |
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K). The gill filaments swell up,
becoming slimy and stick together |
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Chemical factors may be involved |
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Change the water and filter over fresh,
activated charcoal. |
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Are the fish affected with gill worms or flukes? |
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Treat fish with
Praziquantel in marine tanks -or-
De-Los. in freshwater aquariums & ponds. |
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The fill filaments break up from the tip on.
The cartilage remains a little longer. Bacterial
gill rot caused by Columnaris bacteria |
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Treat the fish with
Acriflavine Neutral |
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L). The gill filaments are very pale
pink |
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The fish is anemic, which often occurs following
severe kidney damage or infection by blood flagellates |
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No suitable treatment known. |
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