 Columnaris (Flexibacter columnaris) or Cotton Wool Disease is another
bacterial infection. The common name comes from the white tufts that develop around the mouth and spread to the body and
fins, often leading to ulcers and a thin appearance.
Often mistaken for a fungal infection because of its
mold-like lesions, Columnaris is a common bacterial infection in cultured fish, particularly livebearing fish and
catfish. Its name is derived from columnar shaped bacteria, which are present in virtually all pond
environments.
The bacteria are most likely to infect fish that have been stressed by such conditions as poor
water quality, inadequate diet, or handling and shipping. Columnaris can enter the fish through the gills, mouth, or via
small wounds on the skin. The disease is highly contagious and may be spread through contaminated nets, specimen
containers, and even food.
Treatment with anti bacterial medicine is usually effective. |
