Gill Flukes
Dactylogyrus
High severity ⚠️ Contagious
Microscopic parasitic worms that attack the gills, causing severe breathing distress.
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Symptoms
Rapid or laboured breathing, gasping at the surface, flashing, excess mucus on gills, and one gill held open.
Causes
Monogenean parasites introduced with new fish or plants, multiplying in stressed, overcrowded tanks.
Treatment
Treat with a proprietary anti-fluke medication (praziquantel) for the full course, improve oxygenation, and perform water changes between doses.
Prevention
Quarantine new fish and plants, and avoid overcrowding.
FAQ
How do I know it's gill flukes?
Heavy breathing and gasping with no white spots, especially after adding new fish, point to flukes. Praziquantel is the standard treatment.
Are gill flukes contagious?
Yes, they spread between fish, so treat the whole tank.
This information is general guidance, not veterinary advice. Consult an aquatic vet for serious cases.