09-05-2020, 05:20 PM
Join Date: Apr 2006
| | Re: Rainbowfish Mouth Fungus
Not a fish vet and I have zero experience with mouth "fungus," but I researched this disease just now. Mistergreen's suggested link is a good one and I hope you read it. Kanaplex was a recommended treatment.
Columnaris is caused by gram-negative bacteria, not fungus. Erythromycin treats gram-positive bacteria, so that explains why it didn't work.
One fish disease authority (Ed Noga, DVM) also recommends a salt bath (10-30 ppt for a few minutes to up to 30 minutes depending on how well the fish tolerates salt). If fish doesn't tolerate it well, use lower dose and repeat the bath the next day.
To get 10 ppt salt, you have to add 10 grams to a liter (~quart) of water. And one level teaspoon of salt (NaCl) weighs ~6 grams.
Last edited by dwalstad; 09-05-2020 at 05:21 PM..
Reason: more clarity