Oct 14, 2025 · Learn how to spot, treat, and prevent Columnaris in freshwater fish. Fast symptoms, proven treatments, and prevention tips.

Columnaris (also referred to as cottonmouth and saddle-back disease) is a disease in fish which results from an infection caused by the Gram-negative, aerobic, rod-shaped bacterium Flavobacterium …

Jun 13, 2025 · Columnaris is a bacterial infection in fish often mistaken for fungus. Understand its causes, symptoms, and effective treatments to protect your aquarium.

Mar 25, 2024 · Columnaris, also known as cotton wool disease or saddleback disease, is a bacterial infection that affects freshwater fish. It’s caused by the bacterium Flavobacterium columnare and is …

Jan 12, 2023 · Columnaris is a bacterial infection in fish that affects the skin, gills, and fins. It is caused by Flavobacterium columnare and can be transmitted through contaminated water or equipment.

Jun 30, 2023 · Learn about Columnaris, a common fungal infection affecting aquarium fish. We’ll explore the causes, symptoms, treatments, and preventive measures of this disease, equipping you with vital …

Columnaris disease can affect fish of all ages but is more prevalent in young fish. The severity and occurrence of columnaris disease is generally greater at warmer water temperatures (> 20 °C); …

Aug 31, 2024 · Columnaris occurs frequently in fish raised intensively in cages and in closed recirculating systems and is attributed to crowding and cage abrasions. Once established, the …

Mar 27, 2014 · Columnaris, better known as Flavobacterium columnare (aka Flexibacter columnaris) is one of the more virulent (extremely infectious, malignant, or poisonous) bacterium that attacks fish.

Sep 10, 2025 · This comprehensive guide will explore everything you need to know about Columnaris disease, including causes, symptoms, treatment, prevention, and expert tips to keep your fish safe.