Signs Of Infection

Initially the fins or appear opaque. In the later stages of the disease, the fins begin to disintegrate completely.

Fish Affected

All tropical aquarium fish can be affected but fish with long or trailing fins such as Bettas or Angel fish are particularly susceptible.

Details Of Infection

The disease is caused by the bacteria Aeromonas hydrophilia, Pseudomonas fluorescens and Vibrio anguillarium. The bacteria normally only takes hold when poor environmental factors exist. Infected fish usually die when the fin disintegration reaches the body.

Fins damaged by fin nipping are also prone to bacterial infection and similar symptoms often emerge. Bacterial infections can cause a wide range of symptoms including lumps, spots and moulds. Often, bacterial infections sufficiently weaken the infected fish to the extent that viruses, and parasites take hold.

Treatment

Initially environmental factors should be corrected. Check the water quality and rectify as appropriate. Then administer the appropriate anti bacterial medication. Raising the water temperature 1 or 2 degrees often helps as does the addition of salt to the water.