Tang Fin Problem

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sundance2011

Aquarium Advice Apprentice
Joined
Jun 18, 2011
Messages
13
The fins on my Yellow and Blue Tangs are disappearing/deformed (see image). They were OK when purchased and over the past 2 or 3 months I have seen this problem. There is no indication of a problem other than the fin condition, they are peppy, eating well and I have seen no discoloration at the fin. There is discoloration on the belly of the Yellow Tang but that may be normal, I don't know but doesn't seem to be associated with the fin if not normal. Water chemistry is OK (except nitrates a little high) and have a Cyano problem but it's being addresses.

Any idea what the problem is, what is causing it and how to remedy it.

Obviously I will not bring back the missing fin but I want to eliminate the cause so it does not progress.

Thanks
 

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How big is your tank? What other fish live in there? They could be getting harassed or stressed from other inhabitants or not enough space?


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Tank is an 80G and I have a Blue Tang (which is also suffering from the same problem), A clown and a 6 line wrasse, that is it.
 
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