Fin Rot in Tropical Fish

When dealing with tropical fish illness and disease, it's always a good idea to have a good guidebook at your side. We recommend this book as a handy desktop reference.

The state of your fish's fins, are often an indication of their health, particularly the long finned varieties. While there will be the occasional bit of fin nibbling or tearing, you should see no significant loss of fins, unless there is something else at work, including conditions like fin and tail rot.

Poor fin condition can be the result of excessive nitrites in the water, high levels of ammonia, or improper pH levels, all of which are usually the result of inadequate tank maintenance. Contributing factors are not enough regular water changes, and temperatures that are not high enough for the types of fish in the aquarium. When the fins are weakened, or when they have been nibbled or abraded against rocks, then the fish becomes open to fin rot, which is difficult to treat, and highly contagious.

Fin rot can be caused by a number of bacteria, which will produce initial symptoms ranging from discolored fins, to red lines running through them, if the fish also has a condition known as Red Pest. Tails and fins then become frayed and ragged, and in the last stages, almost non-existent.

It is unlikely that you will have only one or two specimens that are severely affected, without the rest of the tank being compromised. Still, it's wisest to remove those in the worst condition to a hospital tank, and treat the home aquarium with antibiotics, removing all activated charcoal in the filtration system, to preserve the tank's balance while making sure the medication is not removed.

Treat affected fish in the hospital tank with medication specifically for fin and tail rot. It can be a difficult and long-term disease, which can include secondary fungal infections. In that case, you should treat the fin rot first, and then the fungus.

Recommended! A-Z of Tropical Fish Diseases and Health Problems: The aim of this book is to help aquarists recognize signs of illness so they can identify and resolve problems. Divided into three sections, the first focuses on health and husbandry, describing the signs of a healthy fish, anatomy and general care; the second provides signs of diseases and health problems and is cross-referenced to section three, which covers the treatment of diseases and health problems. Illustrated throughout with top-quality color photos, the book is an invaluable reference for novice to experienced fishkeepers. Click here for your copy.

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