Popeye

Symptoms

Early recognition is the key to a good outcome, so inspect your fish daily at feeding time. One or both eyes protruding, cloudiness of the eye, and sometimes a ring of fluid around the eye. If you notice several of these signs together, act promptly rather than waiting.

Causes

Physical injury (one eye) or systemic bacterial infection and poor water quality (usually both eyes). In almost all cases the underlying trigger is stress, poor water quality or the introduction of an infected fish, all of which weaken a fish's natural defences.

Treatment

Improve water quality with regular changes. Use Epsom salt to reduce swelling and a broad-spectrum antibacterial if infection is suspected. Remove sharp decor that may have caused injury.

Throughout treatment, increase aeration, remove activated carbon from the filter (it absorbs medication), complete the full course even after symptoms fade, and keep the water immaculate with regular changes. Always follow the medication's dosing instructions and dose for the tank's true water volume.

Prevention

Maintain clean water and avoid sharp decorations and rough handling. The golden rules are simple: quarantine every new fish for 2-4 weeks, never overstock or overfeed, avoid sudden temperature or chemistry swings, and perform regular partial water changes. A stable, clean, low-stress aquarium prevents the overwhelming majority of disease outbreaks.

FAQ

This information is general guidance, not veterinary advice. Consult an aquatic vet for serious cases.