Costiasis

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About Costiasis

Costiasis or Costia is a freshwater ciliated protozoa parasite species called Ichthyobodo necatrix or Ichtyobodo pyriformis. Formally known as species Costia necatrix.

These are stalked or Flagella (hairs) protozoa which attach to the skin or gills of fish to feed and can swim and attach themselves to other fish and then reproduces to infect other fish.

Quite a common parasite in Koi or outdoor Goldfish.

Symptoms

Signs of infection include excess mucous production, respiratory distress, lethargy, clamped fins, general debilitation and resting on the substrate.

The parasites feed on the gill and skin cells and can quickly kill fish by depriving them of oxygen and allowing secondary infection of fungus and bacteria in to the wounds.

Notes

Treatment


Commercial treatments

King British

Interpet

WaterLife

Pets at Home

API (Aquarium Pharmaceuticals)

Tetra UK

Tetra USA

Jungle Labs (USA)


PondRX USA

References

  1. Koivet on the Costiasis parasite

External links

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