White spots on oto - The Planted Tank Forum
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post #1 of 5 (permalink) Old 02-13-2013, 02:05 AM Thread Starter
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Join Date: Sep 2012
Location: South Carolina
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White spots on oto

Hello. I've been lurking for a while and have learned a lot. I finally have a question that I can't find the answer for and would like some help.

One of my otos has white spots and I'm not sure what they are. It may be ich but I haven't introduced any new fish to the tank is several weeks. None of my other otos or fish are showing any abnormal spots. If you have any ideas what it is let me know.

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post #2 of 5 (permalink) Old 02-13-2013, 03:25 AM
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Location: Missoula, Montana
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Howdy jwwoodjr, I'll take a stab at this, and say that looks like a flexibacter columnaris symptom. I have not had to treat for this, but I do know that it is a gram-negative bacteria. So water changes for sure. And an anti-biotic may save your oto. I am sure that others here with more experience will be able to provide more info. Good luck and welcome to TPT.

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post #3 of 5 (permalink) Old 02-13-2013, 07:47 AM
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Re: White spots on oto

I wonder of my oto has the same thing?


Melafix and primafix didnt seem to help.

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post #4 of 5 (permalink) Old 02-13-2013, 11:59 AM
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Dealing with columnaris now, looks just like that.

Originally Posted by @marko@ View Post
minocycline (maracyn 2) is really weak against columnaris. this is a strong, rapidly spreading disease.
use kanamycin (seachem kanaplex) or if you cant get it sulfathiozole (API triple sulfa, or seachem sulfathizole). i have used both against columnaris, and both worked. salt can also help, as this bacteria doesnt like salt.
DO NOT RAISE THE TEMPS. this bacteria preffers high temps, like 78-86. and it will spread much faster. some people actually advocate lowering the temps for this reason, but i just leave it alone.

Read this thread...

Columnaris? Ok, now what...

Taking life one day at a time

Last edited by Mahlady; 02-13-2013 at 11:59 AM. Reason: added thread link
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post #5 of 5 (permalink) Old 02-13-2013, 02:18 PM Thread Starter
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Join Date: Sep 2012
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Thanks for the replies. I'll start treating once I get off work. As of last night none of my other fish were showing any symptoms and hopefully it will be the same when I get home.
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