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 …

Jan 24, 2026 · Columnaris is a highly contagious bacterial infection in aquarium fish, often mistaken for a fungal disease due to mold-like lesions. Stress, poor water quality, and high temperatures increase …

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 …

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 …

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.

Aug 31, 2024 · First and foremost, columnaris is primarily identified by its tell-tale cottonmouth symptom. It is caused by the bacteria Flavobacterium columnare. If you believe your fish may have such an …

Columnaris is fairly common bacterial disease, as it is present in most recirculating systems. However, being a bacterial disease, it is one that fish typically have an immunity to, as bacteria are …

Columnaris is a bacterial infection caused by Flavobacterium columnare, a pathogen notorious for its ability to spread quickly in aquariums and fish farms. It primarily targets the skin, gills, and mouth, …

This guide shows you how to identify Columnaris early, act in the first hour, choose the right medications, and prevent it from returning. The steps are clear, beginner friendly, and based on what …