Otocinclus with white spot on back - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 12-29-2017, 06:36 PM Thread Starter
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Otocinclus with white spot on back

Itís been increasing in size for quite awhile now, very concerning. Do you guys have any idea what this is?


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post #2 of 9 (permalink) Old 12-29-2017, 07:18 PM
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I just got an oto last week from the pet store that had a big white patch on it's back like that. He died after a few days in my tank, everyone else has been 100% healthy. Since it's growing, maybe fungal. I assumed my oto had an injury and it resulted in the white spot, but maybe it had the same thing...

Sorry, I know that wasn't terribly helpful, just relating.

Is it totally flat? Mine was actually indented.
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post #3 of 9 (permalink) Old 12-30-2017, 05:28 AM
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When did you add this fish to your tank?
Looks a little like saddle-back- columnaris, but the picture is a bit fuzzy so unsure. Noticed any other issues with your fish?
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post #4 of 9 (permalink) Old 01-05-2018, 03:18 PM
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Alright, so one of my oto's has now developed this in my tank so I know something is up and mine from the pet store had this instead of an injury. His overall health seems to be suffering too, he's not a fat and happy oto. Any ideas? I'm going to snap some more photos, see if I can get anything better, but the white seems to have a fuzzy texture to it.

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Last edited by mgeorges; 01-05-2018 at 03:33 PM. Reason: Add more pics
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post #5 of 9 (permalink) Old 01-05-2018, 03:50 PM
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It seems to be a fungal infection. I'd take out all the affected fish and place them in quarantine. Once someone can give you a more specific diagnosis, start treating them with the necessary medication.
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post #6 of 9 (permalink) Old 01-05-2018, 03:57 PM
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Quote:
Originally Posted by fireshadow2000 View Post
It seems to be a fungal infection. I'd take out all the affected fish and place them in quarantine. Once someone can give you a more specific diagnosis, start treating them with the necessary medication.
it indeed looks like some sort of fungus. is there such thing as "more specific diagnose" with these?


OP, quarantine is obviously the answer. good luck
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post #7 of 9 (permalink) Old 01-05-2018, 03:57 PM
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I don't have a quarantine tank, so he'll be chilling in there for now. No other affected fish.
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post #8 of 9 (permalink) Old 01-05-2018, 04:01 PM
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Well that's for now... I'm not saying it's guaranteed but there's a good chance that it will spread.
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post #9 of 9 (permalink) Old 01-05-2018, 04:23 PM
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Quote:
Originally Posted by fireshadow2000 View Post
Well that's for now... I'm not saying it's guaranteed but there's a good chance that it will spread.
Yeah, I'll be watching closely. I know it's not real smart, but I throw ich covered fish in my tank all the time from the pet store and have not once had it spread, never treated for it either. This, however, is a little different I realize. I think I'm going to raise the salinity of the tank, see how that goes. I read a 1tsp/gal is the correct amount, can anyone confirm this? My live stock consists of oto's, harlequin ras, white clouds, panda corys and a few nerites. No shrimp.


I apologize if this is considered "thread hijacking". I figured I could ask questions and add photos since I believe OP and I are dealing with a similar, if not the same, issue.
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