26/08/2026
Comment RX to know the treatment protocol
Read the below description
Flukes in koi fish are microscopic, parasitic flatworms (monogenetic trematodes) that attach to a koi's body or gills using a specialized hooking organ called a haptor. Left untreated, heavy infestations disrupt breathing, cause secondary bacterial infections (like ulcers), and can lead to fish mortality.
Skin Flukes (Gyrodactylus): These are live-bearers (viviparous). They give birth to fully formed young that immediately begin feeding on the fish, allowing populations to multiply explosively. Because there are no eggs, they can usually be eradicated in one or two treatment cycles.
Gill Flukes (Dactylogyrus): These are egg-layers. They lay eggs that drop to the bottom of the pond and hatch later. Because these eggs are highly resistant to chemical treatments, you must perform multiple, timed treatments to catch the larvae after they hatch but before they reproduce.
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