Home

Descriptions

Fish (by common or latin name)

Barbs

Cyprinoidae
Catfish Siluroidei
Cichlids Cichlidae
Killifish Cyprinodontidae
Labyrinth fish Anabantoidei
Livebearer Poeciliidae
American Characins Characoidae
African Characins Characoidae

Other Fish

Diseases

Invertebrates

Aquarium Plants

Biotopes

Food

Marine fish

Algae
Products

 
Web aquaworld

General

General

Books

Fish pictures

Articles

Great Names
My tanks

Site history

Forums

Labyrinth fish

Dwarf cichlids

Links

Links

Labyrinth fish

Linksites

Other

This site

Map

FAQ

Site policies
Acknowledgements
References
Awards
E-mail

 



Cytophaga columnaris + Chondrococcus columnaris

Synonym: Flexibacter

Type: Ectoparasite, Protozoa(singele celled organisms)

Symptoms: Columnaris has several different appearances. One way which is commonly described is the cotton-mouth disease; where the fish's mouth actually looks like it's filled with a cottonlike substance. Another appearance is a whitish small spot on the mouth, wich slowly increases in width, and where the infected flesh is quickly eaten away. Another appearance is a small white spot above the eye, slowly growing bigger, and suddenly leaving a large hole of 2 mm by 1 mm or larger in the head(see the ps dayi picture, just behind the eye), clearly showing pinkish flesh. The last one is often mistakenly identified as hole in the head, or even Ichthyosporidium

Description: Cythophaga columnaris is a gram-negative myxo-bacteria, up to 0.5* 10 micrometer large. The bacteria are supposed to infect the fish at damaged areas, although this is only remotely true. Fish without any damage whatsoever can easily be infected as well, especially in the mouth and head area. The disease is extremely contagious and dangerous, complete tanks can be wiped out by it if not treated.

Infections: The disease can be introduced to a tank by food(rarely), but is mainly introduced by infected fish. Corydoras are in the authors opinion not susceptible to the disease, but they can carry it. Labyrinthfish and Apistogrammas are highly susceptible to the disease, and if intoduced to a tank infected with the disease, they will start showing the signs of the infection after a two week period.

Treatments:

- Colombo Cerpofor - anti-columnaris

- Sera bactyfec

- Methylen blue

Temperature: During all treatment it is advisable to raise the temperature to 30 degrees, if the fish can stand it.

Feeding: The fish can be fed during the treatment, but only small amounts of food that are eaten immediately.

Quarantine period for new fish, and for treated fish: 15 days.

Additional: Latent forms can be present in some fish.

Picture references:

References: B&R, www, medication

If you have any comments please mail to aquaworld

All images, information, text, and other information/items in this site © Aquaworld website as described in the Berne convention.