Goldfish
Bacterial Diseases in Koi & Goldfish
Bacterial diseases are among the most common and serious health challenges facing koi and goldfish keepers worldwide. Caused…
Moderate To To To Severe
Aquarium fish disease diagnosis and medication since 1971.
Browse every disease, parasite, and bacterial infection covered in our knowledge base. Pick filters to narrow it down — results update as you go.
17 conditions
Goldfish
Bacterial diseases are among the most common and serious health challenges facing koi and goldfish keepers worldwide. Caused…
Moderate To To To Severe
Freshwater Tropical
A slow, chronic infection caused by Mycobacterium spp. Symptoms include emaciation, spinal deformity, and granulomas. Zoonotic risk —…
Critical
Freshwater Tropical
Bloated body with pinecone-stuck-out scales — a symptom of organ failure, not a disease itself. Prognosis is generally…
Critical
Freshwater Tropical
Hazy or opaque film over one or both eyes — usually a sign of bacterial infection or chronic…
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: exophthalmia (often unilateral, 'pop-eye'), corneal opacity, spinning/spiral swimming, darkening, hemorrhages around…
Severe
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: open red ulcers (especially in koi), hemorrhagic skin patches, distended abdomen…
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: rtfs in fry: spiral swimming, exophthalmia, dark colouration, anaemia, splenomegaly; older…
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: gas-filled abscesses in muscle ('emphysematous putrefactive' lesions), ascites, exophthalmia, foul odour…
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: subcutaneous hemorrhages around mouth and throat (the 'red mouth'), darkening, exophthalmia,…
Severe
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: chronic, progressive: granulomatous lesions in kidney (creamy white nodules), spleen, and…
Moderate
Freshwater Tropical
Bacterium disease of aquarium fish. Key signs: acute septicaemic: lethargy, head-up vertical floating, petechial hemorrhages on chin and…
Severe
Freshwater Tropical
Virus disease of aquarium fish. Key signs: fry: petechial hemorrhages on skin, exophthalmia, white spots on the body…
Critical
Freshwater Tropical
Virus disease of aquarium fish. Key signs: fry: dark color, exophthalmia, abdominal distension, spiral swimming, white mucoid faecal…
Critical
Freshwater Tropical
Virus disease of aquarium fish. Key signs: acute: exophthalmia, anaemic gills, hemorrhages on skin and at fin bases,…
Critical
Freshwater Tropical
Virus disease of aquarium fish. Key signs: skin congestion, scale erosion, exophthalmia, abdominal swelling, ocular alterations, behavioural changes;…
Critical
Goldfish
Virus disease of aquarium fish. Key signs: lethargy, darkening, exophthalmia, distended abdomen (dropsy), petechial hemorrhages in skin and…
Critical
Freshwater Tropical
Virus disease of aquarium fish. Key signs: fry: darkened skin, exophthalmia, distended abdomen, faecal cast trailing from vent,…
Critical