Koi Ulcer Disease: Causes, Topical Treatment, and Healing Stages
Red open ulcers on koi are dangerous bacterial lesions that erode flesh rapidly. Learn how to clean wounds with iodine, apply propolis, and heal ulcers.
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Koi Fish Diseases
Spot warning signs early and care for koi with confidence.
How to Conduct a Koi Salt Bath and Dip: Safe Salinity and Duration
High-salinity salt dips strip stubborn parasites and stimulate healing mucus without medicating the whole pond. Follow this exact timing and dosage protocol.
Read guideHow to Prevent and Treat Koi Dropsy: Pineconing, Causes, and Recovery
Dropsy causes pinecone scales and severe abdominal swelling in koi. Learn the underlying bacterial and osmoregulatory causes and veterinary treatment options.
Read guideHow to Lower Nitrite in a Koi Pond Fast: Emergency Salt and Water Care
Nitrite causes lethal brown blood disease in koi. Discover the emergency pond salt protocol that blocks nitrite toxicity instantly, plus water management steps.
Read guideHow to Read a Koi Skin Scrape Under a Microscope: Parasite Identification
Accurate parasite identification prevents lethal guesswork. Learn how to take a gentle mucus scrape and identify Costia, Trichodina, Chilodonella, and Flukes.
Read guideHow to Treat Koi Flukes: Praziquantel and Flubenol Dosage Guide
Gill and body flukes cause severe flashing and piping in koi. Learn accurate dosing of Praziquantel, Flubenol, and water temperature schedules.
Read guideHow to Quarantine New Koi Fish: Complete Step-by-Step Guide
Quarantining new koi for 3 to 4 weeks prevents deadly parasites, bacteria, and KHV from entering your pond. Here is the veterinary-approved protocol.
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