Goldfish
Fungal Diseases in Koi & Goldfish
Fungal diseases — most commonly caused by water moulds of the genus Saprolegnia — are a frequent secondary…
Moderate
Disease library
Every disease, parasite, and infection in our knowledge base. Tap the keywords to narrow the list — the page updates with a clean, shareable URL.
Goldfish
Fungal diseases — most commonly caused by water moulds of the genus Saprolegnia — are a frequent secondary…
Moderate
Koi & Pond
Notifiable viral disease devastating koi populations worldwide. Mortality 80–100%. No cure — only management and prevention.
Critical
Freshwater Tropical
The most common freshwater fish disease. Tiny white spots resembling grains of salt cover the body and fins.
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: open red ulcers (especially in koi), hemorrhagic skin patches, distended abdomen…
Moderate
Freshwater Tropical
Oomycete disease of aquarium fish. Key signs: cotton-wool-like white or grey patches on skin, fins or eggs, often…
Moderate