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Identification of ''I. multifiliis'' should be confirmed by taking a sample of skin mucus from an area exhibiting white spots, preparing a wet mount, and examining it with a light microscope.
 
Identification of ''I. multifiliis'' should be confirmed by taking a sample of skin mucus from an area exhibiting white spots, preparing a wet mount, and examining it with a light microscope.
|l1=
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|l1=Ichthyophthirius multifiliis
 
|q2=What is the most probable source of the infection?
 
|q2=What is the most probable source of the infection?
 
|a2=
 
|a2=
 
The affected fish were most probably carriers of the infection. Fish that survive infection by ''I. multifiliis'' retain some immunity to the organism, but may carry a small number of encysted parasites that emerge at a later time, frequently following a change (usually a decrease) in water temperature.
 
The affected fish were most probably carriers of the infection. Fish that survive infection by ''I. multifiliis'' retain some immunity to the organism, but may carry a small number of encysted parasites that emerge at a later time, frequently following a change (usually a decrease) in water temperature.
|l2=
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|l2=Ichthyophthirius multifiliis
 
|q3=How should the problem be managed?
 
|q3=How should the problem be managed?
 
|a3=
 
|a3=
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of emerging tomites from the aquarium.
 
of emerging tomites from the aquarium.
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A third strategy that can control I. multifiliis is careful cleaning of infested aquaria daily with particular attention paid to siphon particulate debris from the bottom and sides of the glass.
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A third strategy that can control ''I. multifiliis'' is careful cleaning of infested aquaria daily with particular attention paid to siphon particulate debris from the bottom and sides of the glass.
|l3=
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|l3=Ichthyophthirius multifiliis
 
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