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Symptoms Finder

You'll get a picture of the koi/goldfish, you click on the koi fish where it's sick, or choose from several other behavioral options that your koi may be exhibiting.

What KoiCrisis Is For?

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Feeding Koi

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Aqua Meds®

Have questions about care of sick fish and/or pond water quality problems and how to treat them? We have the answers.

Fish Medicines

Learn about fish medicines, what they do, and where to get them.


If you have a koi, pond or fish problem, this site takes you through twenty easy questions and at the end you know what you need to fix in your pond to create restored Koi health.



Management of Koi Diseases and Bacterial Infections.

How to ManageInjections will be the only way to save the bacteria infected fish that will not eat.

I strenuously recommend that you obtain the necessary injectable antibiotics and the syringes and needles, and commence injections immediately.

Update Date: If you can not obtain injectable antibiotics Ulcer Aid Rx is the next best treatment.  

Consider the following when undertaking this.

Soaking him in a bath of antibiotics is a last resort, but will not save valuable fish lives. antibacterial bath or topical treatment, however, is different.

antibacterial bath or topical treatment is a dip which kills bacteria on contact and I think you could be effective with antibacterial bath or topical treatment and medicated food.

One recommendation that certainly would not hurt, and can be easily followed-through on: You could go to Pondrx.com, and get a medicated food by Aqua Meds . It is called Medi-Koi medicated koi food . Now, I do not necessarily think the fish has a parasite, but the active ingredient in that food Trimethoprim Sulfa, Kanamycin and a Quinolone. That's the best combination for fish infections. I'd feed this for 14 days.

Improving the overall health of the pond is CRITICAL to your success. If you neglect conditions which influence bacterial infections, your fish will die no MATTER how many medications you use. Here's a list of the conditions which must be corrected before ANY success will be had:

There is little doubt that the average hobbyist would be best served to combine Medi-Koi medicated koi food and antibacterial bath or topical treatmenttogether to recover their fish. Not only are the treatments effective, they are also cost effective.

How To Manage

Tail Rot is just one form of bacterial infection common in Koi and Goldfish