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Gill Maggots
Symptoms:

Infected fish can be seen with small maggots attached to the gills, gill plates, and inside the mouth. Severe infestations can cause severe gill damage, emaciation, anemia, and even death.

Cause:

The crustacean Ergasilus.

Treatment:

Treat the entire aquarium or pond with organophosphorus insecticides such as metriphonate. Medicate the aquarium (0.25 to 0.4 mg/L) for 7-10 days. Some fish, such as piranhas, are sensitive to this medication so treat them separately using potassium permanganate with 30 minute baths for 7-10 days. It is important to improve your aquarium or pond's water quality, being careful not to overfeed.



 
 
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