Rapid breathing tinfoil barb

[corn fed]

I have a tinfoil barb that is breathing extremely fast. Around 200 breaths per minute. I did a water change yesterday and unfortunately the temp dropped around 6 degrees in the middle of it. As soon as I caught it I crancked the temp up and evened it out to what the temp was before. The fish seemed stressed but seemed fine after a half hour or so. Woke up this morning and one of the 9 fish in the tank is breathing fast and staying in one spot and not swimming in the school. I don't physically see anything on the body of the fish or in the gills. What do u think it could be and how do I fix it.
Thank you!!

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[Mlsantos]

What's ur water parameters? I would check that prolly high ammonia/nitrate


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[corn fed]

Not likely. Have had this tank set up for over 5 years. Just moved like 3 weeks ago and haven't been able to find my test kit. But untill this morning everyone was acting fine. Shut of the canister filter for water change so temp swing shouldn't have got to it. I'll have to find my kit or get a new one tho and I'll let you know. Anyone know of a broad spectrum med to treat fungus or gill parasite?

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