White U-shaped line of fuzziness on goldfish

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gingeracha

Aquarium Advice Newbie
Joined
Nov 12, 2013
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http://imgur.com/QSgycdq
http://imgur.com/HmmaEs5I won a goldfish (common I think) at our county fair recently. I purchased a 4 gallon marineland tank to put him in because it was small and the only one of it's size with a bio-wheel filter, along with food, ammonia test kit, gravel, and a cleaning siphon. I put it in after adding a water dechlorinator and safestart and noticed it was sitting at the bottom. This morning I noticed a patch on one side of it's body that has a u-shapped line of fuzz or white colored something on it.

The ammonia levels tested at .25ppm last night and I don't have the testers for any other levels until later today.

I know I probably should have done a fishless cycle now, and acclimated the fish in a better way or at least researched before setting up a tank. I am now worried about A) helping this goldfish get healthy and B) will whatever is wrong with my fish infect my biowheel/filtration and be impossible to get rid of?

I also know that goldfish produce a lot of ammonia and 4 gal is too small to permanently keep one in but it will do for the moment. Just looking to solve the immediate problem.
 
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Sounds like a fungus infection pick up some anti fungus from your lfs and an api master test kit and search up fish in cycle. Frequent water changed and monitering water quality should keep your fish alive.
 
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